51951904 has 24 divisors (see below), whose sum is σ = 102667068. Its totient is φ = 25877760.

The previous prime is 51951899. The next prime is 51951923. The reversal of 51951904 is 40915915.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 49843600 + 2108304 = 7060^2 + 1452^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51951904.

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, 5934 + ... + 11794.

Almost surely, 2^51951904 is an apocalyptic number.

It is an amenable number.

51951904 is a deficient number, since it is larger than the sum of its proper divisors (50715164).

51951904 is a wasteful number, since it uses less digits than its factorization.

51951904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6148 (or 6140 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 51951904 is about 7207.7669218698. The cubic root of 51951904 is about 373.1360039945.

The spelling of 51951904 in words is "fifty-one million, nine hundred fifty-one thousand, nine hundred four".