51170131 has 4 divisors (see below), whose sum is σ = 51191392. Its totient is φ = 51148872.

The previous prime is 51170099. The next prime is 51170137. The reversal of 51170131 is 13107115.

51170131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51170131 - 2⁵ = 51170099 is a prime.

It is a super-2 number, since 2×51170131² = 5236764613114322, 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 = 51170099 and 51170108.

It is not an unprimeable number, because it can be changed into a prime (51170137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6480 + ... + 12013.

It is an arithmetic number, because the mean of its divisors is an integer number (12797848).

Almost surely, 2^51170131 is an apocalyptic number.

51170131 is a deficient number, since it is larger than the sum of its proper divisors (21261).

51170131 is a wasteful number, since it uses less digits than its factorization.

51170131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21260.

The product of its (nonzero) digits is 105, while the sum is 19.

The square root of 51170131 is about 7153.3300636836. The cubic root of 51170131 is about 371.2548845091.

Adding to 51170131 its reverse (13107115), we get a palindrome (64277246).

The spelling of 51170131 in words is "fifty-one million, one hundred seventy thousand, one hundred thirty-one".