91520572 has 24 divisors (see below), whose sum is σ = 188162352. Its totient is φ = 38400000.

The previous prime is 91520501. The next prime is 91520599. The reversal of 91520572 is 27502519.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79429 + ... + 80572.

It is an arithmetic number, because the mean of its divisors is an integer number (7840098).

Almost surely, 2^91520572 is an apocalyptic number.

It is an amenable number.

91520572 is an abundant number, since it is smaller than the sum of its proper divisors (96641780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91520572 is a wasteful number, since it uses less digits than its factorization.

91520572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160029 (or 160027 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 91520572 is about 9566.6384900863. The cubic root of 91520572 is about 450.6502073845.

The spelling of 91520572 in words is "ninety-one million, five hundred twenty thousand, five hundred seventy-two".