255515432 has 8 divisors (see below), whose sum is σ = 479091450. Its totient is φ = 127757712.

The previous prime is 255515431. The next prime is 255515443. The reversal of 255515432 is 234515552.

It can be written as a sum of positive squares in only one way, i.e., 253892356 + 1623076 = 15934^2 + 1274^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (255515431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15969707 + ... + 15969722.

Almost surely, 2^255515432 is an apocalyptic number.

It is an amenable number.

255515432 is a deficient number, since it is larger than the sum of its proper divisors (223576018).

255515432 is a wasteful number, since it uses less digits than its factorization.

255515432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31939435 (or 31939431 counting only the distinct ones).

The product of its digits is 30000, while the sum is 32.

The square root of 255515432 is about 15984.8500774953. The cubic root of 255515432 is about 634.5595407917.

The spelling of 255515432 in words is "two hundred fifty-five million, five hundred fifteen thousand, four hundred thirty-two".