52402520 has 16 divisors (see below), whose sum is σ = 117905760. Its totient is φ = 20960992.

The previous prime is 52402499. The next prime is 52402523. The reversal of 52402520 is 2520425.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 52402492 and 52402501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52402523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 654992 + ... + 655071.

It is an arithmetic number, because the mean of its divisors is an integer number (7369110).

Almost surely, 2^52402520 is an apocalyptic number.

It is an amenable number.

52402520 is an abundant number, since it is smaller than the sum of its proper divisors (65503240).

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

52402520 is a wasteful number, since it uses less digits than its factorization.

52402520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310074 (or 1310070 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 52402520 is about 7238.9584886225. The cubic root of 52402520 is about 374.2117248947.

Adding to 52402520 its reverse (2520425), we get a palindrome (54922945).

The spelling of 52402520 in words is "fifty-two million, four hundred two thousand, five hundred twenty".