564100891 has 2 divisors, whose sum is σ = 564100892. Its totient is φ = 564100890.

The previous prime is 564100871. The next prime is 564100903. The reversal of 564100891 is 198001465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 564100891 - 2¹³ = 564092699 is a prime.

It is not a weakly prime, because it can be changed into another prime (564100841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282050445 + 282050446.

It is an arithmetic number, because the mean of its divisors is an integer number (282050446).

Almost surely, 2^564100891 is an apocalyptic number.

564100891 is a deficient number, since it is larger than the sum of its proper divisors (1).

564100891 is an equidigital number, since it uses as much as digits as its factorization.

564100891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 564100891 is about 23750.8082178270. The cubic root of 564100891 is about 826.2641853796.

The spelling of 564100891 in words is "five hundred sixty-four million, one hundred thousand, eight hundred ninety-one".