91163372 has 6 divisors (see below), whose sum is σ = 159535908. Its totient is φ = 45581684.

The previous prime is 91163353. The next prime is 91163399. The reversal of 91163372 is 27336119.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11395418 + ... + 11395425.

It is an arithmetic number, because the mean of its divisors is an integer number (26589318).

Almost surely, 2^91163372 is an apocalyptic number.

It is an amenable number.

91163372 is a deficient number, since it is larger than the sum of its proper divisors (68372536).

91163372 is a wasteful number, since it uses less digits than its factorization.

91163372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22790847 (or 22790845 counting only the distinct ones).

The product of its digits is 6804, while the sum is 32.

The square root of 91163372 is about 9547.9511938426. The cubic root of 91163372 is about 450.0631549222.

The spelling of 91163372 in words is "ninety-one million, one hundred sixty-three thousand, three hundred seventy-two".