51873222 has 32 divisors (see below), whose sum is σ = 112413312. Its totient is φ = 15894144.

The previous prime is 51873221. The next prime is 51873229. The reversal of 51873222 is 22237815.

51873222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51873222² = 5381662321322568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51873222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51873221) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1528 + ... + 10299.

It is an arithmetic number, because the mean of its divisors is an integer number (3512916).

Almost surely, 2^51873222 is an apocalyptic number.

51873222 is an abundant number, since it is smaller than the sum of its proper divisors (60540090).

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

51873222 is a wasteful number, since it uses less digits than its factorization.

51873222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11892.

The product of its digits is 6720, while the sum is 30.

The square root of 51873222 is about 7202.3067138244. The cubic root of 51873222 is about 372.9475353091.

The spelling of 51873222 in words is "fifty-one million, eight hundred seventy-three thousand, two hundred twenty-two".