45221524 has 12 divisors (see below), whose sum is σ = 81068148. Its totient is φ = 22059200.

The previous prime is 45221507. The next prime is 45221531. The reversal of 45221524 is 42512254.

It can be written as a sum of positive squares in 2 ways, for example, as 1397124 + 43824400 = 1182^2 + 6620^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137707 + ... + 138034.

It is an arithmetic number, because the mean of its divisors is an integer number (6755679).

Almost surely, 2^45221524 is an apocalyptic number.

It is an amenable number.

45221524 is a deficient number, since it is larger than the sum of its proper divisors (35846624).

45221524 is a wasteful number, since it uses less digits than its factorization.

45221524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275786 (or 275784 counting only the distinct ones).

The product of its digits is 3200, while the sum is 25.

The square root of 45221524 is about 6724.6950860243. The cubic root of 45221524 is about 356.2720325350.

Adding to 45221524 its reverse (42512254), we get a palindrome (87733778).

The spelling of 45221524 in words is "forty-five million, two hundred twenty-one thousand, five hundred twenty-four".