51120912 has 20 divisors (see below), whose sum is σ = 132062480. Its totient is φ = 17040288.

The previous prime is 51120893. The next prime is 51120931. The reversal of 51120912 is 21902115.

It is an interprime number because it is at equal distance from previous prime (51120893) and next prime (51120931).

It is a super-2 number, since 2×51120912² = 5226695287423488, which contains 22 as substring.

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, 532462 + ... + 532557.

It is an arithmetic number, because the mean of its divisors is an integer number (6603124).

Almost surely, 2^51120912 is an apocalyptic number.

It is an amenable number.

51120912 is an abundant number, since it is smaller than the sum of its proper divisors (80941568).

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

51120912 is a wasteful number, since it uses less digits than its factorization.

51120912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065030 (or 1065024 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 51120912 is about 7149.8889501866. Note that the first 3 decimals coincide. The cubic root of 51120912 is about 371.1358133790.

The spelling of 51120912 in words is "fifty-one million, one hundred twenty thousand, nine hundred twelve".