572405261 has 2 divisors, whose sum is σ = 572405262. Its totient is φ = 572405260.

The previous prime is 572405257. The next prime is 572405263. The reversal of 572405261 is 162504275.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328733161 + 243672100 = 18131^2 + 15610^2 .

It is a cyclic number.

It is not a de Polignac number, because 572405261 - 2² = 572405257 is a prime.

It is a Sophie Germain prime.

Together with 572405263, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (572405263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286202630 + 286202631.

It is an arithmetic number, because the mean of its divisors is an integer number (286202631).

Almost surely, 2^572405261 is an apocalyptic number.

It is an amenable number.

572405261 is a deficient number, since it is larger than the sum of its proper divisors (1).

572405261 is an equidigital number, since it uses as much as digits as its factorization.

572405261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 572405261 is about 23924.9923928933. The cubic root of 572405261 is about 830.2990459652.

The spelling of 572405261 in words is "five hundred seventy-two million, four hundred five thousand, two hundred sixty-one".