561191453 has 2 divisors, whose sum is σ = 561191454. Its totient is φ = 561191452.

The previous prime is 561191417. The next prime is 561191459. The reversal of 561191453 is 354191165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 533702404 + 27489049 = 23102^2 + 5243^2 .

It is a cyclic number.

It is not a de Polignac number, because 561191453 - 2¹⁰ = 561190429 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561191459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280595726 + 280595727.

It is an arithmetic number, because the mean of its divisors is an integer number (280595727).

Almost surely, 2^561191453 is an apocalyptic number.

It is an amenable number.

561191453 is a deficient number, since it is larger than the sum of its proper divisors (1).

561191453 is an equidigital number, since it uses as much as digits as its factorization.

561191453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 35.

The square root of 561191453 is about 23689.4797958925. The cubic root of 561191453 is about 824.8412075160.

The spelling of 561191453 in words is "five hundred sixty-one million, one hundred ninety-one thousand, four hundred fifty-three".