565450397 has 2 divisors, whose sum is σ = 565450398. Its totient is φ = 565450396.

The previous prime is 565450357. The next prime is 565450409. The reversal of 565450397 is 793054565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 548918041 + 16532356 = 23429^2 + 4066^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-565450397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (565450307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282725198 + 282725199.

It is an arithmetic number, because the mean of its divisors is an integer number (282725199).

Almost surely, 2^565450397 is an apocalyptic number.

It is an amenable number.

565450397 is a deficient number, since it is larger than the sum of its proper divisors (1).

565450397 is an equidigital number, since it uses as much as digits as its factorization.

565450397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567000, while the sum is 44.

The square root of 565450397 is about 23779.2009327479. The cubic root of 565450397 is about 826.9225548851.

The spelling of 565450397 in words is "five hundred sixty-five million, four hundred fifty thousand, three hundred ninety-seven".