255617906 has 16 divisors (see below), whose sum is σ = 421156800. Its totient is φ = 115817328.

The previous prime is 255617893. The next prime is 255617917. The reversal of 255617906 is 609716552.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 145361 + ... + 147108.

It is an arithmetic number, because the mean of its divisors is an integer number (26322300).

Almost surely, 2^255617906 is an apocalyptic number.

255617906 is a deficient number, since it is larger than the sum of its proper divisors (165538894).

255617906 is a wasteful number, since it uses less digits than its factorization.

255617906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292513.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 255617906 is about 15988.0551037329. The cubic root of 255617906 is about 634.6443591045.

The spelling of 255617906 in words is "two hundred fifty-five million, six hundred seventeen thousand, nine hundred six".