53008520 has 32 divisors (see below), whose sum is σ = 123384600. Its totient is φ = 20471808.

The previous prime is 53008517. The next prime is 53008541. The reversal of 53008520 is 2580035.

It can be written as a sum of positive squares in 4 ways, for example, as 39715204 + 13293316 = 6302^2 + 3646^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21689 + ... + 24008.

Almost surely, 2^53008520 is an apocalyptic number.

It is an amenable number.

53008520 is an abundant number, since it is smaller than the sum of its proper divisors (70376080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53008520 is a wasteful number, since it uses less digits than its factorization.

53008520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45737 (or 45733 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 53008520 is about 7280.6950217682. The cubic root of 53008520 is about 375.6487023654.

Adding to 53008520 its reverse (2580035), we get a palindrome (55588555).

The spelling of 53008520 in words is "fifty-three million, eight thousand, five hundred twenty".