56682391 has 2 divisors, whose sum is σ = 56682392. Its totient is φ = 56682390.

The previous prime is 56682371. The next prime is 56682401. The reversal of 56682391 is 19328665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56682391 - 2⁹ = 56681879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56682341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28341195 + 28341196.

It is an arithmetic number, because the mean of its divisors is an integer number (28341196).

Almost surely, 2^56682391 is an apocalyptic number.

56682391 is a deficient number, since it is larger than the sum of its proper divisors (1).

56682391 is an equidigital number, since it uses as much as digits as its factorization.

56682391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 40.

The square root of 56682391 is about 7528.7708824216. The cubic root of 56682391 is about 384.1339751518.

The spelling of 56682391 in words is "fifty-six million, six hundred eighty-two thousand, three hundred ninety-one".