45521253 has 6 divisors (see below), whose sum is σ = 65752934. Its totient is φ = 30347496.

The previous prime is 45521251. The next prime is 45521297. The reversal of 45521253 is 35212554.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 44315649 + 1205604 = 6657^2 + 1098^2 .

It is not a de Polignac number, because 45521253 - 2¹ = 45521251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45521251) 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, 2528950 + ... + 2528967.

Almost surely, 2^45521253 is an apocalyptic number.

It is an amenable number.

45521253 is a deficient number, since it is larger than the sum of its proper divisors (20231681).

45521253 is a wasteful number, since it uses less digits than its factorization.

45521253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5057923 (or 5057920 counting only the distinct ones).

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

The square root of 45521253 is about 6746.9439748674. The cubic root of 45521253 is about 357.0574255009.

The spelling of 45521253 in words is "forty-five million, five hundred twenty-one thousand, two hundred fifty-three".