52421864 has 16 divisors (see below), whose sum is σ = 107226720. Its totient is φ = 23828080.

The previous prime is 52421857. The next prime is 52421867. The reversal of 52421864 is 46812425.

It is a self number, because there is not a number n which added to its sum of digits gives 52421864.

It is not an unprimeable number, because it can be changed into a prime (52421867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297764 + ... + 297939.

It is an arithmetic number, because the mean of its divisors is an integer number (6701670).

Almost surely, 2^52421864 is an apocalyptic number.

It is an amenable number.

52421864 is an abundant number, since it is smaller than the sum of its proper divisors (54804856).

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

52421864 is a wasteful number, since it uses less digits than its factorization.

52421864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595720 (or 595716 counting only the distinct ones).

The product of its digits is 15360, while the sum is 32.

The square root of 52421864 is about 7240.2944691497. The cubic root of 52421864 is about 374.2577650539.

The spelling of 52421864 in words is "fifty-two million, four hundred twenty-one thousand, eight hundred sixty-four".