72512570 has 16 divisors (see below), whose sum is σ = 140563080. Its totient is φ = 26773824.

The previous prime is 72512551. The next prime is 72512581. The reversal of 72512570 is 7521527.

It can be written as a sum of positive squares in 4 ways, for example, as 62520649 + 9991921 = 7907^2 + 3161^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278765 + ... + 279024.

Almost surely, 2^72512570 is an apocalyptic number.

72512570 is a deficient number, since it is larger than the sum of its proper divisors (68050510).

72512570 is a wasteful number, since it uses less digits than its factorization.

72512570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557809.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 72512570 is about 8515.4312867875. The cubic root of 72512570 is about 417.0016428040.

The spelling of 72512570 in words is "seventy-two million, five hundred twelve thousand, five hundred seventy".