715521256 has 16 divisors (see below), whose sum is σ = 1347963840. Its totient is φ = 356064240.

The previous prime is 715521223. The next prime is 715521319. The reversal of 715521256 is 652125517.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210256 + ... + 213631.

It is an arithmetic number, because the mean of its divisors is an integer number (84247740).

Almost surely, 2^715521256 is an apocalyptic number.

It is an amenable number.

715521256 is a deficient number, since it is larger than the sum of its proper divisors (632442584).

715521256 is a wasteful number, since it uses less digits than its factorization.

715521256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424104 (or 424100 counting only the distinct ones).

The product of its digits is 21000, while the sum is 34.

The square root of 715521256 is about 26749.2290730032. The cubic root of 715521256 is about 894.4186505851.

The spelling of 715521256 in words is "seven hundred fifteen million, five hundred twenty-one thousand, two hundred fifty-six".