571942561 has 2 divisors, whose sum is σ = 571942562. Its totient is φ = 571942560.

The previous prime is 571942523. The next prime is 571942573. The reversal of 571942561 is 165249175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 534488161 + 37454400 = 23119^2 + 6120^2 .

It is a cyclic number.

It is not a de Polignac number, because 571942561 - 2¹³ = 571934369 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (571952561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285971280 + 285971281.

It is an arithmetic number, because the mean of its divisors is an integer number (285971281).

Almost surely, 2^571942561 is an apocalyptic number.

It is an amenable number.

571942561 is a deficient number, since it is larger than the sum of its proper divisors (1).

571942561 is an equidigital number, since it uses as much as digits as its factorization.

571942561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 40.

The square root of 571942561 is about 23915.3206334350. The cubic root of 571942561 is about 830.0752634126.

The spelling of 571942561 in words is "five hundred seventy-one million, nine hundred forty-two thousand, five hundred sixty-one".