561287443 has 2 divisors, whose sum is σ = 561287444. Its totient is φ = 561287442.

The previous prime is 561287429. The next prime is 561287459. The reversal of 561287443 is 344782165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561287443 - 2⁵ = 561287411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 561287396 and 561287405.

It is not a weakly prime, because it can be changed into another prime (561287483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280643721 + 280643722.

It is an arithmetic number, because the mean of its divisors is an integer number (280643722).

Almost surely, 2^561287443 is an apocalyptic number.

561287443 is a deficient number, since it is larger than the sum of its proper divisors (1).

561287443 is an equidigital number, since it uses as much as digits as its factorization.

561287443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 40.

The square root of 561287443 is about 23691.5057140740. The cubic root of 561287443 is about 824.8882336501. Note that the first 3 decimals are identical.

The spelling of 561287443 in words is "five hundred sixty-one million, two hundred eighty-seven thousand, four hundred forty-three".