72554375 has 20 divisors (see below), whose sum is σ = 93813720. Its totient is φ = 56028000.

The previous prime is 72554347. The next prime is 72554389. The reversal of 72554375 is 57345527.

It is not a de Polignac number, because 72554375 - 2²⁰ = 71505799 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16124 + ... + 20126.

It is an arithmetic number, because the mean of its divisors is an integer number (4690686).

Almost surely, 2^72554375 is an apocalyptic number.

72554375 is a deficient number, since it is larger than the sum of its proper divisors (21259345).

72554375 is an equidigital number, since it uses as much as digits as its factorization.

72554375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4052 (or 4037 counting only the distinct ones).

The product of its digits is 147000, while the sum is 38.

The square root of 72554375 is about 8517.8855944419. The cubic root of 72554375 is about 417.0817641063.

The spelling of 72554375 in words is "seventy-two million, five hundred fifty-four thousand, three hundred seventy-five".