51120706 has 16 divisors (see below), whose sum is σ = 94377024. Its totient is φ = 20223504.

The previous prime is 51120701. The next prime is 51120731. The reversal of 51120706 is 60702115.

It is a super-2 number, since 2×51120706² = 5226653163876872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51120701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140260 + ... + 140623.

It is an arithmetic number, because the mean of its divisors is an integer number (5898564).

Almost surely, 2^51120706 is an apocalyptic number.

51120706 is a deficient number, since it is larger than the sum of its proper divisors (43256318).

51120706 is a wasteful number, since it uses less digits than its factorization.

51120706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280905.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 51120706 is about 7149.8745443539. The cubic root of 51120706 is about 371.1353148610.

The spelling of 51120706 in words is "fifty-one million, one hundred twenty thousand, seven hundred six".