255615345 has 48 divisors (see below), whose sum is σ = 464248512. Its totient is φ = 134913600.

The previous prime is 255615337. The next prime is 255615359. The reversal of 255615345 is 543516552.

255615345 is a `hidden beast` number, since 2 + 5 + 5 + 615 + 34 + 5 = 666.

It is not a de Polignac number, because 255615345 - 2³ = 255615337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 121674 + ... + 123756.

It is an arithmetic number, because the mean of its divisors is an integer number (9671844).

Almost surely, 2^255615345 is an apocalyptic number.

It is an amenable number.

255615345 is a deficient number, since it is larger than the sum of its proper divisors (208633167).

255615345 is a wasteful number, since it uses less digits than its factorization.

255615345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204 (or 2192 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 255615345 is about 15987.9750124899. The cubic root of 255615345 is about 634.6422396264.

The spelling of 255615345 in words is "two hundred fifty-five million, six hundred fifteen thousand, three hundred forty-five".