Search a number
-
+
255860471 = 673899817
BaseRepresentation
bin11110100000000…
…01111011110111
3122211110001120202
433100001323313
51011000013341
641215551115
76224530616
oct1720017367
9584401522
10255860471
11121476839
127182b49b
1341015039
1425da387d
15176e079b
hexf401ef7

255860471 has 8 divisors (see below), whose sum is σ = 260373360. Its totient is φ = 251368128.

The previous prime is 255860461. The next prime is 255860477. The reversal of 255860471 is 174068552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255860471 - 210 = 255859447 is a prime.

It is a super-3 number, since 3×2558604713 (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255860477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21155 + ... + 30971.

It is an arithmetic number, because the mean of its divisors is an integer number (32546670).

Almost surely, 2255860471 is an apocalyptic number.

255860471 is a deficient number, since it is larger than the sum of its proper divisors (4512889).

255860471 is an equidigital number, since it uses as much as digits as its factorization.

255860471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10273.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 255860471 is about 15995.6391244614. The cubic root of 255860471 is about 634.8450412387.

The spelling of 255860471 in words is "two hundred fifty-five million, eight hundred sixty thousand, four hundred seventy-one".

Divisors: 1 67 389 9817 26063 657739 3818813 255860471