561351499 has 2 divisors, whose sum is σ = 561351500. Its totient is φ = 561351498.

The previous prime is 561351491. The next prime is 561351517. The reversal of 561351499 is 994153165.

561351499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561351499 - 2³ = 561351491 is a prime.

It is not a weakly prime, because it can be changed into another prime (561351491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280675749 + 280675750.

It is an arithmetic number, because the mean of its divisors is an integer number (280675750).

Almost surely, 2^561351499 is an apocalyptic number.

561351499 is a deficient number, since it is larger than the sum of its proper divisors (1).

561351499 is an equidigital number, since it uses as much as digits as its factorization.

561351499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 43.

The square root of 561351499 is about 23692.8575524355. The cubic root of 561351499 is about 824.9196121244.

The spelling of 561351499 in words is "five hundred sixty-one million, three hundred fifty-one thousand, four hundred ninety-nine".