72585022 has 4 divisors (see below), whose sum is σ = 108877536. Its totient is φ = 36292510.

The previous prime is 72584983. The next prime is 72585049. The reversal of 72585022 is 22058527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22058527 = 43 ⋅512989.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18146254 + ... + 18146257.

It is an arithmetic number, because the mean of its divisors is an integer number (27219384).

Almost surely, 2^72585022 is an apocalyptic number.

72585022 is a deficient number, since it is larger than the sum of its proper divisors (36292514).

72585022 is a wasteful number, since it uses less digits than its factorization.

72585022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36292513.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 72585022 is about 8519.6843838255. The cubic root of 72585022 is about 417.1404810135.

The spelling of 72585022 in words is "seventy-two million, five hundred eighty-five thousand, twenty-two".