91001264 has 20 divisors (see below), whose sum is σ = 179207280. Its totient is φ = 44754240.

The previous prime is 91001257. The next prime is 91001269. The reversal of 91001264 is 46210019.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (91001269) 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, 45644 + ... + 47595.

It is an arithmetic number, because the mean of its divisors is an integer number (8960364).

Almost surely, 2^91001264 is an apocalyptic number.

It is an amenable number.

91001264 is a deficient number, since it is larger than the sum of its proper divisors (88206016).

91001264 is a wasteful number, since it uses less digits than its factorization.

91001264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93308 (or 93302 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 91001264 is about 9539.4582655411. The cubic root of 91001264 is about 449.7962270813.

The spelling of 91001264 in words is "ninety-one million, one thousand, two hundred sixty-four".