56751131 has 2 divisors, whose sum is σ = 56751132. Its totient is φ = 56751130.

The previous prime is 56751113. The next prime is 56751133. The reversal of 56751131 is 13115765.

Together with previous prime (56751113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56751131 - 2¹⁴ = 56734747 is a prime.

It is a super-3 number, since 3×56751131³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 56751133, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 56751094 and 56751103.

It is not a weakly prime, because it can be changed into another prime (56751133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28375565 + 28375566.

It is an arithmetic number, because the mean of its divisors is an integer number (28375566).

Almost surely, 2^56751131 is an apocalyptic number.

56751131 is a deficient number, since it is larger than the sum of its proper divisors (1).

56751131 is an equidigital number, since it uses as much as digits as its factorization.

56751131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3150, while the sum is 29.

The square root of 56751131 is about 7533.3346533922. The cubic root of 56751131 is about 384.2891950361.

Adding to 56751131 its reverse (13115765), we get a palindrome (69866896).

The spelling of 56751131 in words is "fifty-six million, seven hundred fifty-one thousand, one hundred thirty-one".