255560015 has 16 divisors (see below), whose sum is σ = 321368256. Its totient is φ = 194726400.

The previous prime is 255559991. The next prime is 255560017. The reversal of 255560015 is 510065552.

It is a de Polignac number, because none of the positive numbers 2^k-255560015 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255560015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255560017) 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 15 ways as a sum of consecutive naturals, for example, 23105 + ... + 32325.

It is an arithmetic number, because the mean of its divisors is an integer number (20085516).

Almost surely, 2^255560015 is an apocalyptic number.

255560015 is a deficient number, since it is larger than the sum of its proper divisors (65808241).

255560015 is a wasteful number, since it uses less digits than its factorization.

255560015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9490.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 255560015 is about 15986.2445558674. The cubic root of 255560015 is about 634.5964451808.

The spelling of 255560015 in words is "two hundred fifty-five million, five hundred sixty thousand, fifteen".