52621836 has 24 divisors (see below), whose sum is σ = 123425904. Its totient is φ = 17448960.

The previous prime is 52621813. The next prime is 52621841. The reversal of 52621836 is 63812625.

It is a junction number, because it is equal to n+sod(n) for n = 52621797 and 52621806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9045 + ... + 13676.

It is an arithmetic number, because the mean of its divisors is an integer number (5142746).

Almost surely, 2^52621836 is an apocalyptic number.

It is an amenable number.

52621836 is an abundant number, since it is smaller than the sum of its proper divisors (70804068).

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

52621836 is a wasteful number, since it uses less digits than its factorization.

52621836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22921 (or 22919 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 52621836 is about 7254.0909837139. The cubic root of 52621836 is about 374.7330509025.

The spelling of 52621836 in words is "fifty-two million, six hundred twenty-one thousand, eight hundred thirty-six".