255815492 has 6 divisors (see below), whose sum is σ = 447677118. Its totient is φ = 127907744.

The previous prime is 255815491. The next prime is 255815519. The reversal of 255815492 is 294518552.

It can be written as a sum of positive squares in only one way, i.e., 206899456 + 48916036 = 14384^2 + 6994^2 .

It is not an unprimeable number, because it can be changed into a prime (255815491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31976933 + ... + 31976940.

It is an arithmetic number, because the mean of its divisors is an integer number (74612853).

Almost surely, 2^255815492 is an apocalyptic number.

It is an amenable number.

255815492 is a deficient number, since it is larger than the sum of its proper divisors (191861626).

255815492 is a wasteful number, since it uses less digits than its factorization.

255815492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63953877 (or 63953875 counting only the distinct ones).

The product of its digits is 144000, while the sum is 41.

The square root of 255815492 is about 15994.2330857094. The cubic root of 255815492 is about 634.8078381902.

The spelling of 255815492 in words is "two hundred fifty-five million, eight hundred fifteen thousand, four hundred ninety-two".