561562403 has 2 divisors, whose sum is σ = 561562404. Its totient is φ = 561562402.

The previous prime is 561562381. The next prime is 561562433. The reversal of 561562403 is 304265165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561562403 - 2²² = 557368099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 561562403.

It is not a weakly prime, because it can be changed into another prime (561562433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280781201 + 280781202.

It is an arithmetic number, because the mean of its divisors is an integer number (280781202).

Almost surely, 2^561562403 is an apocalyptic number.

561562403 is a deficient number, since it is larger than the sum of its proper divisors (1).

561562403 is an equidigital number, since it uses as much as digits as its factorization.

561562403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 561562403 is about 23697.3079272731. The cubic root of 561562403 is about 825.0229086996.

The spelling of 561562403 in words is "five hundred sixty-one million, five hundred sixty-two thousand, four hundred three".