51112155 has 16 divisors (see below), whose sum is σ = 82195200. Its totient is φ = 27121248.

The previous prime is 51112153. The next prime is 51112169. The reversal of 51112155 is 55121115.

It is not a de Polignac number, because 51112155 - 2¹ = 51112153 is a prime.

It is a super-2 number, since 2×51112155² = 5224904777488050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51112151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5577 + ... + 11546.

It is an arithmetic number, because the mean of its divisors is an integer number (5137200).

Almost surely, 2^51112155 is an apocalyptic number.

51112155 is a deficient number, since it is larger than the sum of its proper divisors (31083045).

51112155 is a wasteful number, since it uses less digits than its factorization.

51112155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17330.

The product of its digits is 250, while the sum is 21.

The square root of 51112155 is about 7149.2765368252. The cubic root of 51112155 is about 371.1146203435.

The spelling of 51112155 in words is "fifty-one million, one hundred twelve thousand, one hundred fifty-five".