255604779 has 6 divisors (see below), whose sum is σ = 369206916. Its totient is φ = 170403180.

The previous prime is 255604759. The next prime is 255604781. The reversal of 255604779 is 977406552.

It is not a de Polignac number, because 255604779 - 2⁷ = 255604651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255604759) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14200257 + ... + 14200274.

It is an arithmetic number, because the mean of its divisors is an integer number (61534486).

Almost surely, 2^255604779 is an apocalyptic number.

255604779 is a deficient number, since it is larger than the sum of its proper divisors (113602137).

255604779 is a wasteful number, since it uses less digits than its factorization.

255604779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28400537 (or 28400534 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The square root of 255604779 is about 15987.6445732322. The cubic root of 255604779 is about 634.6334950780.

The spelling of 255604779 in words is "two hundred fifty-five million, six hundred four thousand, seven hundred seventy-nine".