91165552 has 20 divisors (see below), whose sum is σ = 177054640. Its totient is φ = 45474048.

The previous prime is 91165523. The next prime is 91165567. The reversal of 91165552 is 25556119.

It is a super-3 number, since 3×91165552³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349 + ... + 13507.

It is an arithmetic number, because the mean of its divisors is an integer number (8852732).

Almost surely, 2^91165552 is an apocalyptic number.

It is an amenable number.

91165552 is a deficient number, since it is larger than the sum of its proper divisors (85889088).

91165552 is a wasteful number, since it uses less digits than its factorization.

91165552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13600 (or 13594 counting only the distinct ones).

The product of its digits is 13500, while the sum is 34.

The square root of 91165552 is about 9548.0653537772. The cubic root of 91165552 is about 450.0667423639.

The spelling of 91165552 in words is "ninety-one million, one hundred sixty-five thousand, five hundred fifty-two".