52185866900 has 36 divisors (see below), whose sum is σ = 113261076348. Its totient is φ = 20871075840.

The previous prime is 52185866899. The next prime is 52185866911. The reversal of 52185866900 is 966858125.

It can be written as a sum of positive squares in 6 ways, for example, as 16680755716 + 35505111184 = 129154^2 + 188428^2 .

It is a super-2 number, since 2×52185866900² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 660302 + ... + 735098.

Almost surely, 2^52185866900 is an apocalyptic number.

52185866900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

52185866900 is an abundant number, since it is smaller than the sum of its proper divisors (61075209448).

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

52185866900 is a wasteful number, since it uses less digits than its factorization.

52185866900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81788 (or 81781 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 50.

The spelling of 52185866900 in words is "fifty-two billion, one hundred eighty-five million, eight hundred sixty-six thousand, nine hundred".