255135515 has 16 divisors (see below), whose sum is σ = 323723520. Its totient is φ = 192497760.

The previous prime is 255135509. The next prime is 255135523. The reversal of 255135515 is 515531552.

It is not a de Polignac number, because 255135515 - 2²² = 250941211 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15650 + ... + 27480.

It is an arithmetic number, because the mean of its divisors is an integer number (20232720).

Almost surely, 2^255135515 is an apocalyptic number.

255135515 is a deficient number, since it is larger than the sum of its proper divisors (68588005).

255135515 is a wasteful number, since it uses less digits than its factorization.

255135515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12082.

The product of its digits is 18750, while the sum is 32.

The square root of 255135515 is about 15972.9619983270. The cubic root of 255135515 is about 634.2448832928.

The spelling of 255135515 in words is "two hundred fifty-five million, one hundred thirty-five thousand, five hundred fifteen".