51519928 has 16 divisors (see below), whose sum is σ = 102282480. Its totient is φ = 24244608.

The previous prime is 51519917. The next prime is 51519953. The reversal of 51519928 is 82991515.

It is a super-2 number, since 2×51519928² = 5308605962250368, which contains 22 as substring.

It is a congruent number.

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, 189276 + ... + 189547.

It is an arithmetic number, because the mean of its divisors is an integer number (6392655).

Almost surely, 2^51519928 is an apocalyptic number.

It is an amenable number.

51519928 is a deficient number, since it is larger than the sum of its proper divisors (50762552).

51519928 is a wasteful number, since it uses less digits than its factorization.

51519928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378846 (or 378842 counting only the distinct ones).

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

The square root of 51519928 is about 7177.7383624649. The cubic root of 51519928 is about 372.0989253998.

The spelling of 51519928 in words is "fifty-one million, five hundred nineteen thousand, nine hundred twenty-eight".