72158875 has 8 divisors (see below), whose sum is σ = 90054432. Its totient is φ = 57727000.

The previous prime is 72158839. The next prime is 72158881. The reversal of 72158875 is 57885127.

It is not a de Polignac number, because 72158875 - 2¹¹ = 72156827 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 288511 + ... + 288760.

It is an arithmetic number, because the mean of its divisors is an integer number (11256804).

Almost surely, 2^72158875 is an apocalyptic number.

72158875 is a deficient number, since it is larger than the sum of its proper divisors (17895557).

72158875 is an equidigital number, since it uses as much as digits as its factorization.

72158875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577286 (or 577276 counting only the distinct ones).

The product of its digits is 156800, while the sum is 43.

The square root of 72158875 is about 8494.6380146537. The cubic root of 72158875 is about 416.3225336299.

The spelling of 72158875 in words is "seventy-two million, one hundred fifty-eight thousand, eight hundred seventy-five".