561481793 has 2 divisors, whose sum is σ = 561481794. Its totient is φ = 561481792.

The previous prime is 561481783. The next prime is 561481807. The reversal of 561481793 is 397184165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 542750209 + 18731584 = 23297^2 + 4328^2 .

It is a cyclic number.

It is not a de Polignac number, because 561481793 - 2¹⁶ = 561416257 is a prime.

It is not a weakly prime, because it can be changed into another prime (561481783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280740896 + 280740897.

It is an arithmetic number, because the mean of its divisors is an integer number (280740897).

Almost surely, 2^561481793 is an apocalyptic number.

It is an amenable number.

561481793 is a deficient number, since it is larger than the sum of its proper divisors (1).

561481793 is an equidigital number, since it uses as much as digits as its factorization.

561481793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 561481793 is about 23695.6070401245. The cubic root of 561481793 is about 824.9834305824.

The spelling of 561481793 in words is "five hundred sixty-one million, four hundred eighty-one thousand, seven hundred ninety-three".