91325473 has 4 divisors (see below), whose sum is σ = 94271488. Its totient is φ = 88379460.

The previous prime is 91325447. The next prime is 91325497. The reversal of 91325473 is 37452319.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37452319 = 331 ⋅113149.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91325473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91329473) 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, 1472961 + ... + 1473022.

It is an arithmetic number, because the mean of its divisors is an integer number (23567872).

Almost surely, 2^91325473 is an apocalyptic number.

It is an amenable number.

91325473 is a deficient number, since it is larger than the sum of its proper divisors (2946015).

91325473 is a wasteful number, since it uses less digits than its factorization.

91325473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2946014.

The product of its digits is 22680, while the sum is 34.

The square root of 91325473 is about 9556.4362081270. The cubic root of 91325473 is about 450.3297550080.

The spelling of 91325473 in words is "ninety-one million, three hundred twenty-five thousand, four hundred seventy-three".