72557375 has 16 divisors (see below), whose sum is σ = 98785440. Its totient is φ = 52768000.

The previous prime is 72557369. The next prime is 72557389. The reversal of 72557375 is 57375527.

It is not a de Polignac number, because 72557375 - 2⁸ = 72557119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25010 + ... + 27759.

It is an arithmetic number, because the mean of its divisors is an integer number (6174090).

Almost surely, 2^72557375 is an apocalyptic number.

72557375 is a deficient number, since it is larger than the sum of its proper divisors (26228065).

72557375 is a wasteful number, since it uses less digits than its factorization.

72557375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52795 (or 52785 counting only the distinct ones).

The product of its digits is 257250, while the sum is 41.

The square root of 72557375 is about 8518.0616926622. The cubic root of 72557375 is about 417.0875125676.

The spelling of 72557375 in words is "seventy-two million, five hundred fifty-seven thousand, three hundred seventy-five".