56678131 has 2 divisors, whose sum is σ = 56678132. Its totient is φ = 56678130.

The previous prime is 56678129. The next prime is 56678143. The reversal of 56678131 is 13187665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56678131 - 2¹ = 56678129 is a prime.

It is a super-2 number, since 2×56678131² = 6424821067306322, which contains 22 as substring.

Together with 56678129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56678161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28339065 + 28339066.

It is an arithmetic number, because the mean of its divisors is an integer number (28339066).

Almost surely, 2^56678131 is an apocalyptic number.

56678131 is a deficient number, since it is larger than the sum of its proper divisors (1).

56678131 is an equidigital number, since it uses as much as digits as its factorization.

56678131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 37.

The square root of 56678131 is about 7528.4879623999. The cubic root of 56678131 is about 384.1243516356.

The spelling of 56678131 in words is "fifty-six million, six hundred seventy-eight thousand, one hundred thirty-one".