91855552 has 14 divisors (see below), whose sum is σ = 182275988. Its totient is φ = 45927744.

The previous prime is 91855549. The next prime is 91855559. The reversal of 91855552 is 25555819.

It is not an unprimeable number, because it can be changed into a prime (91855559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 717558 + ... + 717685.

Almost surely, 2^91855552 is an apocalyptic number.

It is an amenable number.

91855552 is a deficient number, since it is larger than the sum of its proper divisors (90420436).

91855552 is a wasteful number, since it uses less digits than its factorization.

91855552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435255 (or 1435245 counting only the distinct ones).

The product of its digits is 90000, while the sum is 40.

The square root of 91855552 is about 9584.1302161438. The cubic root of 91855552 is about 451.1993553300.

The spelling of 91855552 in words is "ninety-one million, eight hundred fifty-five thousand, five hundred fifty-two".