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255104431 = 17192321493
BaseRepresentation
bin11110011010010…
…01010110101111
3122210000122111021
433031021112233
51010301320211
641151435011
76215231461
oct1715112657
9583018437
10255104431
11120aaa80a
1271525a67
1340b0bb8a
1425c48131
15175e1771
hexf3495af

255104431 has 24 divisors (see below), whose sum is σ = 297425520. Its totient is φ = 217426176.

The previous prime is 255104389. The next prime is 255104441. The reversal of 255104431 is 134401552.

It is a happy number.

It is not a de Polignac number, because 255104431 - 223 = 246715823 is a prime.

It is a super-2 number, since 2×2551044312 = 130156541431667522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255104396 and 255104405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255104441) 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, 170121 + ... + 171613.

It is an arithmetic number, because the mean of its divisors is an integer number (12392730).

Almost surely, 2255104431 is an apocalyptic number.

255104431 is a deficient number, since it is larger than the sum of its proper divisors (42321089).

255104431 is a wasteful number, since it uses less digits than its factorization.

255104431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575 (or 1552 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 255104431 is about 15971.9889494076. The cubic root of 255104431 is about 634.2191248657.

Adding to 255104431 its reverse (134401552), we get a palindrome (389505983).

The spelling of 255104431 in words is "two hundred fifty-five million, one hundred four thousand, four hundred thirty-one".

Divisors: 1 17 19 23 323 391 437 529 1493 7429 8993 10051 25381 28367 34339 170867 482239 583763 652441 789797 11091497 13426549 15006143 255104431