91264497 has 4 divisors (see below), whose sum is σ = 121686000. Its totient is φ = 60842996.

The previous prime is 91264477. The next prime is 91264507. The reversal of 91264497 is 79446219.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91264497 - 2²⁶ = 24155633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91264477) 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, 15210747 + ... + 15210752.

It is an arithmetic number, because the mean of its divisors is an integer number (30421500).

Almost surely, 2^91264497 is an apocalyptic number.

It is an amenable number.

91264497 is a deficient number, since it is larger than the sum of its proper divisors (30421503).

91264497 is a wasteful number, since it uses less digits than its factorization.

91264497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30421502.

The product of its digits is 108864, while the sum is 42.

The square root of 91264497 is about 9553.2453647962. The cubic root of 91264497 is about 450.2295076187.

The spelling of 91264497 in words is "ninety-one million, two hundred sixty-four thousand, four hundred ninety-seven".