52187844 has 12 divisors (see below), whose sum is σ = 121771664. Its totient is φ = 17395944.

The previous prime is 52187833. The next prime is 52187857. The reversal of 52187844 is 44878125.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×52187844² = 5447142122736672, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 2174482 + ... + 2174505.

Almost surely, 2^52187844 is an apocalyptic number.

It is an amenable number.

52187844 is an abundant number, since it is smaller than the sum of its proper divisors (69583820).

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

52187844 is a wasteful number, since it uses less digits than its factorization.

52187844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4348994 (or 4348992 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 52187844 is about 7224.1154475825. The cubic root of 52187844 is about 373.7000177752.

The spelling of 52187844 in words is "fifty-two million, one hundred eighty-seven thousand, eight hundred forty-four".