45521523 has 6 divisors (see below), whose sum is σ = 65753324. Its totient is φ = 30347676.

The previous prime is 45521519. The next prime is 45521537. The reversal of 45521523 is 32512554.

It is a happy number.

It is not a de Polignac number, because 45521523 - 2² = 45521519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45521513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2528965 + ... + 2528982.

Almost surely, 2^45521523 is an apocalyptic number.

45521523 is a deficient number, since it is larger than the sum of its proper divisors (20231801).

45521523 is a wasteful number, since it uses less digits than its factorization.

45521523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5057953 (or 5057950 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 45521523 is about 6746.9639838968. The cubic root of 45521523 is about 357.0581314372.

The spelling of 45521523 in words is "forty-five million, five hundred twenty-one thousand, five hundred twenty-three".