561453469 has 2 divisors, whose sum is σ = 561453470. Its totient is φ = 561453468.

The previous prime is 561453463. The next prime is 561453479. The reversal of 561453469 is 964354165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 521574244 + 39879225 = 22838^2 + 6315^2 .

It is a cyclic number.

It is not a de Polignac number, because 561453469 - 2³ = 561453461 is a prime.

It is a super-2 number, since 2×561453469² = 630459995704267922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561453461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280726734 + 280726735.

It is an arithmetic number, because the mean of its divisors is an integer number (280726735).

Almost surely, 2^561453469 is an apocalyptic number.

It is an amenable number.

561453469 is a deficient number, since it is larger than the sum of its proper divisors (1).

561453469 is an equidigital number, since it uses as much as digits as its factorization.

561453469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 43.

The square root of 561453469 is about 23695.0093690634. The cubic root of 561453469 is about 824.9695582278.

The spelling of 561453469 in words is "five hundred sixty-one million, four hundred fifty-three thousand, four hundred sixty-nine".