255911172 has 48 divisors (see below), whose sum is σ = 652361472. Its totient is φ = 77435680.

The previous prime is 255911153. The next prime is 255911177. The reversal of 255911172 is 271119552.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (255911177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152683 + ... + 154349.

It is an arithmetic number, because the mean of its divisors is an integer number (13590864).

Almost surely, 2^255911172 is an apocalyptic number.

255911172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

255911172 is an abundant number, since it is smaller than the sum of its proper divisors (396450300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255911172 is a wasteful number, since it uses less digits than its factorization.

255911172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848 (or 2846 counting only the distinct ones).

The product of its digits is 6300, while the sum is 33.

The square root of 255911172 is about 15997.2238841619. The cubic root of 255911172 is about 634.8869718432.

It can be divided in two parts, 2559 and 11172, that added together give a palindrome (13731).

The spelling of 255911172 in words is "two hundred fifty-five million, nine hundred eleven thousand, one hundred seventy-two".