53040520 has 32 divisors (see below), whose sum is σ = 128522520. Its totient is φ = 19584000.

The previous prime is 53040497. The next prime is 53040557. The reversal of 53040520 is 2504035.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18301284 + 34739236 = 4278^2 + 5894^2 .

It is a Smith number, since the sum of its digits (19) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50481 + ... + 51520.

Almost surely, 2^53040520 is an apocalyptic number.

It is an amenable number.

53040520 is an abundant number, since it is smaller than the sum of its proper divisors (75482000).

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

53040520 is a wasteful number, since it uses less digits than its factorization.

53040520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102025 (or 102021 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 53040520 is about 7282.8922826031. The cubic root of 53040520 is about 375.7242772630.

Adding to 53040520 its reverse (2504035), we get a palindrome (55544555).

The spelling of 53040520 in words is "fifty-three million, forty thousand, five hundred twenty".