51161156 has 12 divisors (see below), whose sum is σ = 89596668. Its totient is φ = 25562112.

The previous prime is 51161141. The next prime is 51161207. The reversal of 51161156 is 65116115.

It can be written as a sum of positive squares in 2 ways, for example, as 38316100 + 12845056 = 6190^2 + 3584^2 .

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, 3020 + ... + 10556.

It is an arithmetic number, because the mean of its divisors is an integer number (7466389).

Almost surely, 2^51161156 is an apocalyptic number.

It is an amenable number.

51161156 is a deficient number, since it is larger than the sum of its proper divisors (38435512).

51161156 is a wasteful number, since it uses less digits than its factorization.

51161156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9238 (or 9236 counting only the distinct ones).

The product of its digits is 900, while the sum is 26.

The square root of 51161156 is about 7152.7027059707. The cubic root of 51161156 is about 371.2331777872.

The spelling of 51161156 in words is "fifty-one million, one hundred sixty-one thousand, one hundred fifty-six".