91805452 has 12 divisors (see below), whose sum is σ = 160918576. Its totient is φ = 45828720.

The previous prime is 91805449. The next prime is 91805459. The reversal of 91805452 is 25450819.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (91805459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15663 + ... + 20710.

Almost surely, 2^91805452 is an apocalyptic number.

It is an amenable number.

91805452 is a deficient number, since it is larger than the sum of its proper divisors (69113124).

91805452 is a wasteful number, since it uses less digits than its factorization.

91805452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37008 (or 37006 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 91805452 is about 9581.5161639482. The cubic root of 91805452 is about 451.1173091236.

The spelling of 91805452 in words is "ninety-one million, eight hundred five thousand, four hundred fifty-two".