51861192 has 16 divisors (see below), whose sum is σ = 129653040. Its totient is φ = 17287056.

The previous prime is 51861167. The next prime is 51861247. The reversal of 51861192 is 29116815.

51861192 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 1080418 + ... + 1080465.

It is an arithmetic number, because the mean of its divisors is an integer number (8103315).

Almost surely, 2^51861192 is an apocalyptic number.

It is an amenable number.

51861192 is an abundant number, since it is smaller than the sum of its proper divisors (77791848).

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

51861192 is a wasteful number, since it uses less digits than its factorization.

51861192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160892 (or 2160888 counting only the distinct ones).

The product of its digits is 4320, while the sum is 33.

The square root of 51861192 is about 7201.4715162944. The cubic root of 51861192 is about 372.9187027981.

The spelling of 51861192 in words is "fifty-one million, eight hundred sixty-one thousand, one hundred ninety-two".