56027809 has 2 divisors, whose sum is σ = 56027810. Its totient is φ = 56027808.

The previous prime is 56027791. The next prime is 56027849. The reversal of 56027809 is 90872065.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30747025 + 25280784 = 5545^2 + 5028^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56027809 is a prime.

It is not a weakly prime, because it can be changed into another prime (56027849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28013904 + 28013905.

It is an arithmetic number, because the mean of its divisors is an integer number (28013905).

Almost surely, 2^56027809 is an apocalyptic number.

It is an amenable number.

56027809 is a deficient number, since it is larger than the sum of its proper divisors (1).

56027809 is an equidigital number, since it uses as much as digits as its factorization.

56027809 is an evil number, because the sum of its binary digits is even.

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

The square root of 56027809 is about 7485.1726099002. The cubic root of 56027809 is about 382.6495554831.

The spelling of 56027809 in words is "fifty-six million, twenty-seven thousand, eight hundred nine".