51405112 has 32 divisors (see below), whose sum is σ = 105462000. Its totient is φ = 23296000.

The previous prime is 51405077. The next prime is 51405121. The reversal of 51405112 is 21150415.

It is a self number, because there is not a number n which added to its sum of digits gives 51405112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38862 + ... + 40162.

Almost surely, 2^51405112 is an apocalyptic number.

It is an amenable number.

51405112 is an abundant number, since it is smaller than the sum of its proper divisors (54056888).

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

51405112 is a wasteful number, since it uses less digits than its factorization.

51405112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767 (or 1763 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 51405112 is about 7169.7358389274. The cubic root of 51405112 is about 371.8223030759.

Adding to 51405112 its reverse (21150415), we get a palindrome (72555527).

The spelling of 51405112 in words is "fifty-one million, four hundred five thousand, one hundred twelve".