561203479 has 2 divisors, whose sum is σ = 561203480. Its totient is φ = 561203478.

The previous prime is 561203441. The next prime is 561203483. The reversal of 561203479 is 974302165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561203479 - 2¹⁹ = 560679191 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561203179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280601739 + 280601740.

It is an arithmetic number, because the mean of its divisors is an integer number (280601740).

Almost surely, 2^561203479 is an apocalyptic number.

561203479 is a deficient number, since it is larger than the sum of its proper divisors (1).

561203479 is an equidigital number, since it uses as much as digits as its factorization.

561203479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 561203479 is about 23689.7336202837. The cubic root of 561203479 is about 824.8470994265.

The spelling of 561203479 in words is "five hundred sixty-one million, two hundred three thousand, four hundred seventy-nine".