91165422 has 16 divisors (see below), whose sum is σ = 190258560. Its totient is φ = 29067192.

The previous prime is 91165421. The next prime is 91165429. The reversal of 91165422 is 22456119.

It is a super-2 number, since 2×91165422² = 16622268336876168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91165422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91165421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330172 + ... + 330447.

It is an arithmetic number, because the mean of its divisors is an integer number (11891160).

Almost surely, 2^91165422 is an apocalyptic number.

91165422 is an abundant number, since it is smaller than the sum of its proper divisors (99093138).

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

91165422 is a wasteful number, since it uses less digits than its factorization.

91165422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660647.

The product of its digits is 4320, while the sum is 30.

The square root of 91165422 is about 9548.0585461129. The cubic root of 91165422 is about 450.0665284355.

The spelling of 91165422 in words is "ninety-one million, one hundred sixty-five thousand, four hundred twenty-two".