56005291 has 2 divisors, whose sum is σ = 56005292. Its totient is φ = 56005290.

The previous prime is 56005289. The next prime is 56005343. The reversal of 56005291 is 19250065.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56005291 - 2¹ = 56005289 is a prime.

Together with 56005289, it forms a pair of twin primes.

56005291 is a modest number, since divided by 5291 gives 56 as remainder.

It is equal to p_3338623 and since 56005291 and 3338623 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (56005231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28002645 + 28002646.

It is an arithmetic number, because the mean of its divisors is an integer number (28002646).

Almost surely, 2^56005291 is an apocalyptic number.

56005291 is a deficient number, since it is larger than the sum of its proper divisors (1).

56005291 is an equidigital number, since it uses as much as digits as its factorization.

56005291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 56005291 is about 7483.6682850057. The cubic root of 56005291 is about 382.5982853642.

The spelling of 56005291 in words is "fifty-six million, five thousand, two hundred ninety-one".