255061779 has 32 divisors (see below), whose sum is σ = 404974080. Its totient is φ = 139756800.

The previous prime is 255061759. The next prime is 255061783. The reversal of 255061779 is 977160552.

It is not a de Polignac number, because 255061779 - 2²⁵ = 221507347 is a prime.

It is a super-2 number, since 2×255061779² = 130113022213289682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 255061779.

It is not an unprimeable number, because it can be changed into a prime (255061759) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48289 + ... + 53309.

It is an arithmetic number, because the mean of its divisors is an integer number (12655440).

Almost surely, 2^255061779 is an apocalyptic number.

255061779 is a deficient number, since it is larger than the sum of its proper divisors (149912301).

255061779 is a wasteful number, since it uses less digits than its factorization.

255061779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5131.

The product of its (nonzero) digits is 132300, while the sum is 42.

The square root of 255061779 is about 15970.6536810489. The cubic root of 255061779 is about 634.1837769604.

The spelling of 255061779 in words is "two hundred fifty-five million, sixty-one thousand, seven hundred seventy-nine".