51955968 has 36 divisors (see below), whose sum is σ = 138280688. Its totient is φ = 17318400.

The previous prime is 51955933. The next prime is 51955991. The reversal of 51955968 is 86955915.

It is a happy number.

It is a super-2 number, since 2×51955968² = 5398845221634048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 33058 + ... + 34593.

Almost surely, 2^51955968 is an apocalyptic number.

It is an amenable number.

51955968 is an abundant number, since it is smaller than the sum of its proper divisors (86324720).

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

51955968 is an equidigital number, since it uses as much as digits as its factorization.

51955968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67670 (or 67656 counting only the distinct ones).

The product of its digits is 486000, while the sum is 48.

The square root of 51955968 is about 7208.0488344628. The cubic root of 51955968 is about 373.1457334113.

The spelling of 51955968 in words is "fifty-one million, nine hundred fifty-five thousand, nine hundred sixty-eight".