91652921 has 4 divisors (see below), whose sum is σ = 91717200. Its totient is φ = 91588644.

The previous prime is 91652893. The next prime is 91652947. The reversal of 91652921 is 12925619.

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 91652921 - 2¹⁴ = 91636537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91652521) 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, 29951 + ... + 32868.

It is an arithmetic number, because the mean of its divisors is an integer number (22929300).

Almost surely, 2^91652921 is an apocalyptic number.

It is an amenable number.

91652921 is a deficient number, since it is larger than the sum of its proper divisors (64279).

91652921 is a wasteful number, since it uses less digits than its factorization.

91652921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64278.

The product of its digits is 9720, while the sum is 35.

The square root of 91652921 is about 9573.5532066208. The cubic root of 91652921 is about 450.8673329840.

The spelling of 91652921 in words is "ninety-one million, six hundred fifty-two thousand, nine hundred twenty-one".