52513643 has 16 divisors (see below), whose sum is σ = 65956800. Its totient is φ = 41545728.

The previous prime is 52513639. The next prime is 52513667. The reversal of 52513643 is 34631525.

52513643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52513643 - 2² = 52513639 is a prime.

It is a super-2 number, since 2×52513643² = 5515365402262898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52513633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1430 + ... + 10347.

It is an arithmetic number, because the mean of its divisors is an integer number (4122300).

Almost surely, 2^52513643 is an apocalyptic number.

52513643 is a deficient number, since it is larger than the sum of its proper divisors (13443157).

52513643 is a wasteful number, since it uses less digits than its factorization.

52513643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11811 (or 11797 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 52513643 is about 7246.6297683820. The cubic root of 52513643 is about 374.4760516901.

The spelling of 52513643 in words is "fifty-two million, five hundred thirteen thousand, six hundred forty-three".