561038393 has 2 divisors, whose sum is σ = 561038394. Its totient is φ = 561038392.

The previous prime is 561038377. The next prime is 561038407. The reversal of 561038393 is 393830165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 516789289 + 44249104 = 22733^2 + 6652^2 .

It is a cyclic number.

It is not a de Polignac number, because 561038393 - 2⁴ = 561038377 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (561038353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280519196 + 280519197.

It is an arithmetic number, because the mean of its divisors is an integer number (280519197).

Almost surely, 2^561038393 is an apocalyptic number.

It is an amenable number.

561038393 is a deficient number, since it is larger than the sum of its proper divisors (1).

561038393 is an equidigital number, since it uses as much as digits as its factorization.

561038393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 561038393 is about 23686.2490276532. The cubic root of 561038393 is about 824.7662113187.

The spelling of 561038393 in words is "five hundred sixty-one million, thirty-eight thousand, three hundred ninety-three".