51918952 has 16 divisors (see below), whose sum is σ = 103074660. Its totient is φ = 24432384.

The previous prime is 51918917. The next prime is 51918967. The reversal of 51918952 is 25981915.

It can be written as a sum of positive squares in 2 ways, for example, as 42954916 + 8964036 = 6554^2 + 2994^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190743 + ... + 191014.

Almost surely, 2^51918952 is an apocalyptic number.

It is an amenable number.

51918952 is a deficient number, since it is larger than the sum of its proper divisors (51155708).

51918952 is a wasteful number, since it uses less digits than its factorization.

51918952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381780 (or 381776 counting only the distinct ones).

The product of its digits is 32400, while the sum is 40.

The square root of 51918952 is about 7205.4806918068. The cubic root of 51918952 is about 373.0570965360.

The spelling of 51918952 in words is "fifty-one million, nine hundred eighteen thousand, nine hundred fifty-two".