72091075 has 24 divisors (see below), whose sum is σ = 102493440. Its totient is φ = 49274400.

The previous prime is 72091069. The next prime is 72091093. The reversal of 72091075 is 57019027.

It is not a de Polignac number, because 72091075 - 2⁵ = 72091043 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85506 + ... + 86344.

It is an arithmetic number, because the mean of its divisors is an integer number (4270560).

Almost surely, 2^72091075 is an apocalyptic number.

72091075 is a deficient number, since it is larger than the sum of its proper divisors (30402365).

72091075 is a wasteful number, since it uses less digits than its factorization.

72091075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347 (or 1342 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 72091075 is about 8490.6463240439. The cubic root of 72091075 is about 416.1921014739.

The spelling of 72091075 in words is "seventy-two million, ninety-one thousand, seventy-five".