56864287 has 2 divisors, whose sum is σ = 56864288. Its totient is φ = 56864286.

The previous prime is 56864281. The next prime is 56864293. The reversal of 56864287 is 78246865.

It is a balanced prime because it is at equal distance from previous prime (56864281) and next prime (56864293).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56864287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56864281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28432143 + 28432144.

It is an arithmetic number, because the mean of its divisors is an integer number (28432144).

Almost surely, 2^56864287 is an apocalyptic number.

56864287 is a deficient number, since it is larger than the sum of its proper divisors (1).

56864287 is an equidigital number, since it uses as much as digits as its factorization.

56864287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 46.

The square root of 56864287 is about 7540.8412660657. The cubic root of 56864287 is about 384.5444366970.

The spelling of 56864287 in words is "fifty-six million, eight hundred sixty-four thousand, two hundred eighty-seven".