255494657 has 32 divisors (see below), whose sum is σ = 299230848. Its totient is φ = 216000000.

The previous prime is 255494641. The next prime is 255494737. The reversal of 255494657 is 756494552.

It is a cyclic number.

It is not a de Polignac number, because 255494657 - 2⁴ = 255494641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255494627) 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, 1017782 + ... + 1018032.

It is an arithmetic number, because the mean of its divisors is an integer number (9350964).

Almost surely, 2^255494657 is an apocalyptic number.

It is an amenable number.

255494657 is a deficient number, since it is larger than the sum of its proper divisors (43736191).

255494657 is a wasteful number, since it uses less digits than its factorization.

255494657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401.

The product of its digits is 1512000, while the sum is 47.

The square root of 255494657 is about 15984.2002302273. The cubic root of 255494657 is about 634.5423424414.

The spelling of 255494657 in words is "two hundred fifty-five million, four hundred ninety-four thousand, six hundred fifty-seven".