52513540 has 48 divisors (see below), whose sum is σ = 113218560. Its totient is φ = 20453120.

The previous prime is 52513537. The next prime is 52513541. The reversal of 52513540 is 4531525.

It is not an unprimeable number, because it can be changed into a prime (52513541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225264 + ... + 225496.

It is an arithmetic number, because the mean of its divisors is an integer number (2358720).

Almost surely, 2^52513540 is an apocalyptic number.

It is an amenable number.

52513540 is an abundant number, since it is smaller than the sum of its proper divisors (60705020).

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

52513540 is a wasteful number, since it uses less digits than its factorization.

52513540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 52513540 is about 7246.6226616266. The cubic root of 52513540 is about 374.4758068581.

The spelling of 52513540 in words is "fifty-two million, five hundred thirteen thousand, five hundred forty".