52313640 has 32 divisors (see below), whose sum is σ = 156941280. Its totient is φ = 13950272.

The previous prime is 52313627. The next prime is 52313659. The reversal of 52313640 is 4631325.

It is a happy number.

52313640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 52313640.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 217854 + ... + 218093.

It is an arithmetic number, because the mean of its divisors is an integer number (4904415).

Almost surely, 2^52313640 is an apocalyptic number.

It is an amenable number.

52313640 is an abundant number, since it is smaller than the sum of its proper divisors (104627640).

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

52313640 is a wasteful number, since it uses less digits than its factorization.

52313640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435961 (or 435957 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 52313640 is about 7232.8168786442. The cubic root of 52313640 is about 374.0000381290. Note that the first 4 decimals are identical.

Adding to 52313640 its reverse (4631325), we get a palindrome (56944965).

The spelling of 52313640 in words is "fifty-two million, three hundred thirteen thousand, six hundred forty".