564021361 has 2 divisors, whose sum is σ = 564021362. Its totient is φ = 564021360.

The previous prime is 564021349. The next prime is 564021371. The reversal of 564021361 is 163120465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 330512400 + 233508961 = 18180^2 + 15281^2 .

It is a cyclic number.

It is not a de Polignac number, because 564021361 - 2¹⁹ = 563497073 is a prime.

It is not a weakly prime, because it can be changed into another prime (564021301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282010680 + 282010681.

It is an arithmetic number, because the mean of its divisors is an integer number (282010681).

Almost surely, 2^564021361 is an apocalyptic number.

It is an amenable number.

564021361 is a deficient number, since it is larger than the sum of its proper divisors (1).

564021361 is an equidigital number, since it uses as much as digits as its factorization.

564021361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 564021361 is about 23749.1338999973. The cubic root of 564021361 is about 826.2253531541.

The spelling of 564021361 in words is "five hundred sixty-four million, twenty-one thousand, three hundred sixty-one".