Search a number
-
+
255032421 = 3719233641
BaseRepresentation
bin11110011001101…
…11110001100101
3122202212222201020
433030313301211
51010242014141
641150121353
76214511520
oct1714676145
9582788636
10255032421
11120a606a6
12714b0259
1340ab5177
1425c29bb7
15175ca266
hexf337c65

255032421 has 24 divisors (see below), whose sum is σ = 410163264. Its totient is φ = 138058560.

The previous prime is 255032411. The next prime is 255032431. The reversal of 255032421 is 124230552.

It is an interprime number because it is at equal distance from previous prime (255032411) and next prime (255032431).

It is not a de Polignac number, because 255032421 - 214 = 255016037 is a prime.

It is a super-2 number, since 2×2550324212 = 130083071522242482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 255032391 and 255032400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255032411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9240 + ... + 24401.

It is an arithmetic number, because the mean of its divisors is an integer number (17090136).

Almost surely, 2255032421 is an apocalyptic number.

255032421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

255032421 is a deficient number, since it is larger than the sum of its proper divisors (155130843).

255032421 is a wasteful number, since it uses less digits than its factorization.

255032421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33689 (or 33670 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 255032421 is about 15969.7345312939. The cubic root of 255032421 is about 634.1594441866.

Adding to 255032421 its reverse (124230552), we get a palindrome (379262973).

The spelling of 255032421 in words is "two hundred fifty-five million, thirty-two thousand, four hundred twenty-one".

Divisors: 1 3 7 19 21 57 133 361 399 1083 2527 7581 33641 100923 235487 639179 706461 1917537 4474253 12144401 13422759 36433203 85010807 255032421