52112520 has 48 divisors (see below), whose sum is σ = 169366860. Its totient is φ = 13896576.

The previous prime is 52112513. The next prime is 52112521. The reversal of 52112520 is 2521125.

52112520 is a `hidden beast` number, since 521 + 125 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 52099524 + 12996 = 7218^2 + 114^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 52112493 and 52112502.

It is not an unprimeable number, because it can be changed into a prime (52112521) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 72019 + ... + 72738.

Almost surely, 2^52112520 is an apocalyptic number.

It is an amenable number.

52112520 is an abundant number, since it is smaller than the sum of its proper divisors (117254340).

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

52112520 is a wasteful number, since it uses less digits than its factorization.

52112520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144774 (or 144767 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 52112520 is about 7218.9001932427. The cubic root of 52112520 is about 373.5201410621.

Adding to 52112520 its reverse (2521125), we get a palindrome (54633645).

It can be divided in two parts, 521 and 12520, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 52112520 in words is "fifty-two million, one hundred twelve thousand, five hundred twenty".