52130540 has 48 divisors (see below), whose sum is σ = 136491264. Its totient is φ = 16248000.

The previous prime is 52130527. The next prime is 52130563. The reversal of 52130540 is 4503125.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15386 + ... + 18465.

It is an arithmetic number, because the mean of its divisors is an integer number (2843568).

Almost surely, 2^52130540 is an apocalyptic number.

It is an amenable number.

52130540 is an abundant number, since it is smaller than the sum of its proper divisors (84360724).

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

52130540 is a wasteful number, since it uses less digits than its factorization.

52130540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33878 (or 33876 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 52130540 is about 7220.1481979250. The cubic root of 52130540 is about 373.5631893051.

Adding to 52130540 its reverse (4503125), we get a palindrome (56633665).

The spelling of 52130540 in words is "fifty-two million, one hundred thirty thousand, five hundred forty".