91384556 has 12 divisors (see below), whose sum is σ = 160027392. Its totient is φ = 45662448.

The previous prime is 91384529. The next prime is 91384567. The reversal of 91384556 is 65548319.

It is a super-2 number, since 2×91384556² = 16702274150634272, which contains 22 as substring.

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, 341 + ... + 13523.

It is an arithmetic number, because the mean of its divisors is an integer number (13335616).

Almost surely, 2^91384556 is an apocalyptic number.

It is an amenable number.

91384556 is a deficient number, since it is larger than the sum of its proper divisors (68642836).

91384556 is a wasteful number, since it uses less digits than its factorization.

91384556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14920 (or 14918 counting only the distinct ones).

The product of its digits is 129600, while the sum is 41.

The square root of 91384556 is about 9559.5269757452. The cubic root of 91384556 is about 450.4268476604.

The spelling of 91384556 in words is "ninety-one million, three hundred eighty-four thousand, five hundred fifty-six".