72257552 has 20 divisors (see below), whose sum is σ = 141973056. Its totient is φ = 35619360.

The previous prime is 72257527. The next prime is 72257567. The reversal of 72257552 is 25575227.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30668 + ... + 32939.

Almost surely, 2^72257552 is an apocalyptic number.

It is an amenable number.

72257552 is a deficient number, since it is larger than the sum of its proper divisors (69715504).

72257552 is a wasteful number, since it uses less digits than its factorization.

72257552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63686 (or 63680 counting only the distinct ones).

The product of its digits is 49000, while the sum is 35.

The square root of 72257552 is about 8500.4442236862. Note that the first 3 decimals coincide. The cubic root of 72257552 is about 416.5122203761.

The spelling of 72257552 in words is "seventy-two million, two hundred fifty-seven thousand, five hundred fifty-two".