51112919 has 16 divisors (see below), whose sum is σ = 60510240. Its totient is φ = 42562560.

The previous prime is 51112883. The next prime is 51112949. The reversal of 51112919 is 91921115.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51112919 is a prime.

It is a super-2 number, since 2×51112919² = 5225060977401122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51112891 and 51112900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51112949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18287 + ... + 20895.

It is an arithmetic number, because the mean of its divisors is an integer number (3781890).

Almost surely, 2^51112919 is an apocalyptic number.

51112919 is a deficient number, since it is larger than the sum of its proper divisors (9397321).

51112919 is a wasteful number, since it uses less digits than its factorization.

51112919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2770.

The product of its digits is 810, while the sum is 29.

The square root of 51112919 is about 7149.3299686054. The cubic root of 51112919 is about 371.1164694155.

The spelling of 51112919 in words is "fifty-one million, one hundred twelve thousand, nine hundred nineteen".