561571469 has 2 divisors, whose sum is σ = 561571470. Its totient is φ = 561571468.

The previous prime is 561571393. The next prime is 561571487. The reversal of 561571469 is 964175165.

561571469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 300328900 + 261242569 = 17330^2 + 16163^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561571469 is a prime.

It is a super-2 number, since 2×561571469² = 630725029589635922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561577469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280785734 + 280785735.

It is an arithmetic number, because the mean of its divisors is an integer number (280785735).

Almost surely, 2^561571469 is an apocalyptic number.

It is an amenable number.

561571469 is a deficient number, since it is larger than the sum of its proper divisors (1).

561571469 is an equidigital number, since it uses as much as digits as its factorization.

561571469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 44.

The square root of 561571469 is about 23697.4992140521. The cubic root of 561571469 is about 825.0273484659.

The spelling of 561571469 in words is "five hundred sixty-one million, five hundred seventy-one thousand, four hundred sixty-nine".