255617408 has 32 divisors (see below), whose sum is σ = 510510000. Its totient is φ = 127489536.

The previous prime is 255617387. The next prime is 255617429. The reversal of 255617408 is 804716552.

It is an interprime number because it is at equal distance from previous prime (255617387) and next prime (255617429).

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53918 + ... + 58466.

Almost surely, 2^255617408 is an apocalyptic number.

It is an amenable number.

255617408 is a deficient number, since it is larger than the sum of its proper divisors (254892592).

255617408 is an equidigital number, since it uses as much as digits as its factorization.

255617408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5002 (or 4990 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 255617408 is about 15988.0395295984. The cubic root of 255617408 is about 634.6439469619.

The spelling of 255617408 in words is "two hundred fifty-five million, six hundred seventeen thousand, four hundred eight".