91216952 has 8 divisors (see below), whose sum is σ = 171031800. Its totient is φ = 45608472.

The previous prime is 91216921. The next prime is 91216963. The reversal of 91216952 is 25961219.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5701052 + ... + 5701067.

It is an arithmetic number, because the mean of its divisors is an integer number (21378975).

Almost surely, 2^91216952 is an apocalyptic number.

It is an amenable number.

91216952 is a deficient number, since it is larger than the sum of its proper divisors (79814848).

91216952 is a wasteful number, since it uses less digits than its factorization.

91216952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11402125 (or 11402121 counting only the distinct ones).

The product of its digits is 9720, while the sum is 35.

The square root of 91216952 is about 9550.7566192423. The cubic root of 91216952 is about 450.1513104337.

The spelling of 91216952 in words is "ninety-one million, two hundred sixteen thousand, nine hundred fifty-two".