51405116 has 18 divisors (see below), whose sum is σ = 104646528. Its totient is φ = 22030680.

The previous prime is 51405077. The next prime is 51405121. The reversal of 51405116 is 61150415.

It is a junction number, because it is equal to n+sod(n) for n = 51405091 and 51405100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130940 + ... + 131331.

It is an arithmetic number, because the mean of its divisors is an integer number (5813696).

Almost surely, 2^51405116 is an apocalyptic number.

It is an amenable number.

51405116 is an abundant number, since it is smaller than the sum of its proper divisors (53241412).

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

51405116 is a wasteful number, since it uses less digits than its factorization.

51405116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262289 (or 262280 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 51405116 is about 7169.7361178777. The cubic root of 51405116 is about 371.8223127202.

The spelling of 51405116 in words is "fifty-one million, four hundred five thousand, one hundred sixteen".