51856122 has 24 divisors (see below), whose sum is σ = 108398304. Its totient is φ = 16506864.

The previous prime is 51856109. The next prime is 51856157. The reversal of 51856122 is 22165815.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 51856122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84288 + ... + 84900.

It is an arithmetic number, because the mean of its divisors is an integer number (4516596).

Almost surely, 2^51856122 is an apocalyptic number.

51856122 is an abundant number, since it is smaller than the sum of its proper divisors (56542182).

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

51856122 is an equidigital number, since it uses as much as digits as its factorization.

51856122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254 (or 641 counting only the distinct ones).

The product of its digits is 4800, while the sum is 30.

The square root of 51856122 is about 7201.1194963006. The cubic root of 51856122 is about 372.9065501051.

The spelling of 51856122 in words is "fifty-one million, eight hundred fifty-six thousand, one hundred twenty-two".