45215524 has 18 divisors (see below), whose sum is σ = 81955874. Its totient is φ = 21826560.

The previous prime is 45215507. The next prime is 45215531. The reversal of 45215524 is 42551254.

It can be written as a sum of positive squares in 3 ways, for example, as 2050624 + 43164900 = 1432^2 + 6570^2 .

It is a super-2 number, since 2×45215524² = 4088887221189152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45215492 and 45215501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3357 + ... + 10084.

Almost surely, 2^45215524 is an apocalyptic number.

It is an amenable number.

45215524 is a deficient number, since it is larger than the sum of its proper divisors (36740350).

45215524 is a wasteful number, since it uses less digits than its factorization.

45215524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13503 (or 13472 counting only the distinct ones).

The product of its digits is 8000, while the sum is 28.

The square root of 45215524 is about 6724.2489543443. The cubic root of 45215524 is about 356.2562750921.

Adding to 45215524 its reverse (42551254), we get a palindrome (87766778).

The spelling of 45215524 in words is "forty-five million, two hundred fifteen thousand, five hundred twenty-four".