56005867 has 2 divisors, whose sum is σ = 56005868. Its totient is φ = 56005866.

The previous prime is 56005861. The next prime is 56005879. The reversal of 56005867 is 76850065.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56005867 - 2¹⁹ = 55481579 is a prime.

It is not a weakly prime, because it can be changed into another prime (56005861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28002933 + 28002934.

It is an arithmetic number, because the mean of its divisors is an integer number (28002934).

Almost surely, 2^56005867 is an apocalyptic number.

56005867 is a deficient number, since it is larger than the sum of its proper divisors (1).

56005867 is an equidigital number, since it uses as much as digits as its factorization.

56005867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 56005867 is about 7483.7067687076. The cubic root of 56005867 is about 382.5995970013.

The spelling of 56005867 in words is "fifty-six million, five thousand, eight hundred sixty-seven".