572561777 has 2 divisors, whose sum is σ = 572561778. Its totient is φ = 572561776.

The previous prime is 572561741. The next prime is 572561779. The reversal of 572561777 is 777165275.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 428945521 + 143616256 = 20711^2 + 11984^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-572561777 is a prime.

Together with 572561779, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (572561779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286280888 + 286280889.

It is an arithmetic number, because the mean of its divisors is an integer number (286280889).

Almost surely, 2^572561777 is an apocalyptic number.

It is an amenable number.

572561777 is a deficient number, since it is larger than the sum of its proper divisors (1).

572561777 is an equidigital number, since it uses as much as digits as its factorization.

572561777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720300, while the sum is 47.

The square root of 572561777 is about 23928.2631421505. The cubic root of 572561777 is about 830.3747168528.

The spelling of 572561777 in words is "five hundred seventy-two million, five hundred sixty-one thousand, seven hundred seventy-seven".