52381864 has 8 divisors (see below), whose sum is σ = 98216010. Its totient is φ = 26190928.

The previous prime is 52381831. The next prime is 52381867. The reversal of 52381864 is 46818325.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 51236964 + 1144900 = 7158^2 + 1070^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×52381864² = 5487719352228992, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (52381867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3273859 + ... + 3273874.

Almost surely, 2^52381864 is an apocalyptic number.

It is an amenable number.

52381864 is a deficient number, since it is larger than the sum of its proper divisors (45834146).

52381864 is a wasteful number, since it uses less digits than its factorization.

52381864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6547739 (or 6547735 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 52381864 is about 7237.5316234197. The cubic root of 52381864 is about 374.1625495673.

The spelling of 52381864 in words is "fifty-two million, three hundred eighty-one thousand, eight hundred sixty-four".