51943904 has 24 divisors (see below), whose sum is σ = 102501000. Its totient is φ = 25911936.

The previous prime is 51943861. The next prime is 51943939. The reversal of 51943904 is 40934915.

It is a super-2 number, since 2×51943904² = 5396338325522432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14342 + ... + 17594.

It is an arithmetic number, because the mean of its divisors is an integer number (4270875).

Almost surely, 2^51943904 is an apocalyptic number.

It is an amenable number.

51943904 is a deficient number, since it is larger than the sum of its proper divisors (50557096).

51943904 is a wasteful number, since it uses less digits than its factorization.

51943904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3762 (or 3754 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 51943904 is about 7207.2119436020. The cubic root of 51943904 is about 373.1168501166.

The spelling of 51943904 in words is "fifty-one million, nine hundred forty-three thousand, nine hundred four".