255515560 has 32 divisors (see below), whose sum is σ = 576259200. Its totient is φ = 101966400.

The previous prime is 255515551. The next prime is 255515569. The reversal of 255515560 is 65515552.

It is an interprime number because it is at equal distance from previous prime (255515551) and next prime (255515569).

It is a super-2 number, since 2×255515560² = 130576402804227200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (255515569) by changing a digit.

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, 10285 + ... + 24835.

It is an arithmetic number, because the mean of its divisors is an integer number (18008100).

Almost surely, 2^255515560 is an apocalyptic number.

255515560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255515560 is an abundant number, since it is smaller than the sum of its proper divisors (320743640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255515560 is a wasteful number, since it uses less digits than its factorization.

255515560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15001 (or 14997 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 34.

The square root of 255515560 is about 15984.8540812858. The cubic root of 255515560 is about 634.5596467522.

The spelling of 255515560 in words is "two hundred fifty-five million, five hundred fifteen thousand, five hundred sixty".