561143411 has 2 divisors, whose sum is σ = 561143412. Its totient is φ = 561143410.

The previous prime is 561143393. The next prime is 561143419. The reversal of 561143411 is 114341165.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561143411 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (561143419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280571705 + 280571706.

It is an arithmetic number, because the mean of its divisors is an integer number (280571706).

Almost surely, 2^561143411 is an apocalyptic number.

561143411 is a deficient number, since it is larger than the sum of its proper divisors (1).

561143411 is an equidigital number, since it uses as much as digits as its factorization.

561143411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 26.

The square root of 561143411 is about 23688.4657797841. The cubic root of 561143411 is about 824.8176694098.

Adding to 561143411 its reverse (114341165), we get a palindrome (675484576).

The spelling of 561143411 in words is "five hundred sixty-one million, one hundred forty-three thousand, four hundred eleven".