564316381 has 2 divisors, whose sum is σ = 564316382. Its totient is φ = 564316380.

The previous prime is 564316373. The next prime is 564316409. The reversal of 564316381 is 183613465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 466128100 + 98188281 = 21590^2 + 9909^2 .

It is a cyclic number.

It is not a de Polignac number, because 564316381 - 2³ = 564316373 is a prime.

It is a super-3 number, since 3×564316381³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 564316381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564316351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282158190 + 282158191.

It is an arithmetic number, because the mean of its divisors is an integer number (282158191).

Almost surely, 2^564316381 is an apocalyptic number.

It is an amenable number.

564316381 is a deficient number, since it is larger than the sum of its proper divisors (1).

564316381 is an equidigital number, since it uses as much as digits as its factorization.

564316381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 37.

The square root of 564316381 is about 23755.3442618708. The cubic root of 564316381 is about 826.3693846473.

The spelling of 564316381 in words is "five hundred sixty-four million, three hundred sixteen thousand, three hundred eighty-one".