51922228 has 6 divisors (see below), whose sum is σ = 90863906. Its totient is φ = 25961112.

The previous prime is 51922219. The next prime is 51922261. The reversal of 51922228 is 82222915.

It can be written as a sum of positive squares in only one way, i.e., 49956624 + 1965604 = 7068^2 + 1402^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51922228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6490275 + ... + 6490282.

Almost surely, 2^51922228 is an apocalyptic number.

It is an amenable number.

51922228 is a deficient number, since it is larger than the sum of its proper divisors (38941678).

51922228 is a wasteful number, since it uses less digits than its factorization.

51922228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12980561 (or 12980559 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 51922228 is about 7205.7080151780. The cubic root of 51922228 is about 373.0649427995.

The spelling of 51922228 in words is "fifty-one million, nine hundred twenty-two thousand, two hundred twenty-eight".