255131513 has 32 divisors (see below), whose sum is σ = 324715776. Its totient is φ = 195084288.

The previous prime is 255131509. The next prime is 255131521. The reversal of 255131513 is 315131552.

It is a happy number.

It is not a de Polignac number, because 255131513 - 2² = 255131509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255131533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 441881 + ... + 442457.

It is an arithmetic number, because the mean of its divisors is an integer number (10147368).

Almost surely, 2^255131513 is an apocalyptic number.

It is an amenable number.

255131513 is a deficient number, since it is larger than the sum of its proper divisors (69584263).

255131513 is a wasteful number, since it uses less digits than its factorization.

255131513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753.

The product of its digits is 2250, while the sum is 26.

The square root of 255131513 is about 15972.8367236380. The cubic root of 255131513 is about 634.2415670665.

The spelling of 255131513 in words is "two hundred fifty-five million, one hundred thirty-one thousand, five hundred thirteen".