51042113 has 16 divisors (see below), whose sum is σ = 55059840. Its totient is φ = 47174400.

The previous prime is 51042053. The next prime is 51042149. The reversal of 51042113 is 31124015.

It is a cyclic number.

It is not a de Polignac number, because 51042113 - 2²⁴ = 34264897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51042091 and 51042100.

It is not an unprimeable number, because it can be changed into a prime (51042613) 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, 211673 + ... + 211913.

It is an arithmetic number, because the mean of its divisors is an integer number (3441240).

Almost surely, 2^51042113 is an apocalyptic number.

It is an amenable number.

51042113 is a deficient number, since it is larger than the sum of its proper divisors (4017727).

51042113 is a wasteful number, since it uses less digits than its factorization.

51042113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 51042113 is about 7144.3763198757. The cubic root of 51042113 is about 370.9450227673.

Adding to 51042113 its reverse (31124015), we get a palindrome (82166128).

The spelling of 51042113 in words is "fifty-one million, forty-two thousand, one hundred thirteen".