56131847 has 2 divisors, whose sum is σ = 56131848. Its totient is φ = 56131846.

The previous prime is 56131811. The next prime is 56131853. The reversal of 56131847 is 74813165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56131847 - 2⁶ = 56131783 is a prime.

It is equal to p_3345776 and since 56131847 and 3345776 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56131877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28065923 + 28065924.

It is an arithmetic number, because the mean of its divisors is an integer number (28065924).

Almost surely, 2^56131847 is an apocalyptic number.

56131847 is a deficient number, since it is larger than the sum of its proper divisors (1).

56131847 is an equidigital number, since it uses as much as digits as its factorization.

56131847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 56131847 is about 7492.1189926482. The cubic root of 56131847 is about 382.8862562658.

The spelling of 56131847 in words is "fifty-six million, one hundred thirty-one thousand, eight hundred forty-seven".