561913433 has 2 divisors, whose sum is σ = 561913434. Its totient is φ = 561913432.

The previous prime is 561913411. The next prime is 561913441. The reversal of 561913433 is 334319165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 412780489 + 149132944 = 20317^2 + 12212^2 .

It is a cyclic number.

It is not a de Polignac number, because 561913433 - 2⁶ = 561913369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 561913393 and 561913402.

It is not a weakly prime, because it can be changed into another prime (561913453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280956716 + 280956717.

It is an arithmetic number, because the mean of its divisors is an integer number (280956717).

Almost surely, 2^561913433 is an apocalyptic number.

It is an amenable number.

561913433 is a deficient number, since it is larger than the sum of its proper divisors (1).

561913433 is an equidigital number, since it uses as much as digits as its factorization.

561913433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 35.

The square root of 561913433 is about 23704.7133076947. The cubic root of 561913433 is about 825.1947788646.

The spelling of 561913433 in words is "five hundred sixty-one million, nine hundred thirteen thousand, four hundred thirty-three".