561504353 has 2 divisors, whose sum is σ = 561504354. Its totient is φ = 561504352.

The previous prime is 561504337. The next prime is 561504367. The reversal of 561504353 is 353405165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 541585984 + 19918369 = 23272^2 + 4463^2 .

It is a cyclic number.

It is not a de Polignac number, because 561504353 - 2⁴ = 561504337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (561504323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280752176 + 280752177.

It is an arithmetic number, because the mean of its divisors is an integer number (280752177).

Almost surely, 2^561504353 is an apocalyptic number.

It is an amenable number.

561504353 is a deficient number, since it is larger than the sum of its proper divisors (1).

561504353 is an equidigital number, since it uses as much as digits as its factorization.

561504353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 561504353 is about 23696.0830729469. The cubic root of 561504353 is about 824.9944795468.

The spelling of 561504353 in words is "five hundred sixty-one million, five hundred four thousand, three hundred fifty-three".