91625572 has 6 divisors (see below), whose sum is σ = 160344758. Its totient is φ = 45812784.

The previous prime is 91625557. The next prime is 91625593. The reversal of 91625572 is 27552619.

It can be written as a sum of positive squares in only one way, i.e., 80174116 + 11451456 = 8954^2 + 3384^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11453193 + ... + 11453200.

Almost surely, 2^91625572 is an apocalyptic number.

It is an amenable number.

91625572 is a deficient number, since it is larger than the sum of its proper divisors (68719186).

91625572 is a wasteful number, since it uses less digits than its factorization.

91625572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22906397 (or 22906395 counting only the distinct ones).

The product of its digits is 37800, while the sum is 37.

The square root of 91625572 is about 9572.1247380088. The cubic root of 91625572 is about 450.8224826317.

The spelling of 91625572 in words is "ninety-one million, six hundred twenty-five thousand, five hundred seventy-two".