255231513 has 16 divisors (see below), whose sum is σ = 388341760. Its totient is φ = 165554928.

The previous prime is 255231497. The next prime is 255231521. The reversal of 255231513 is 315132552.

It is a happy number.

255231513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 255231513 - 2⁴ = 255231497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (255231533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126745 + ... + 128742.

It is an arithmetic number, because the mean of its divisors is an integer number (24271360).

Almost surely, 2^255231513 is an apocalyptic number.

It is an amenable number.

255231513 is a deficient number, since it is larger than the sum of its proper divisors (133110247).

255231513 is a wasteful number, since it uses less digits than its factorization.

255231513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255533 (or 255527 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 255231513 is about 15975.9667313124. The cubic root of 255231513 is about 634.3244209005.

The spelling of 255231513 in words is "two hundred fifty-five million, two hundred thirty-one thousand, five hundred thirteen".