572142509 has 2 divisors, whose sum is σ = 572142510. Its totient is φ = 572142508.

The previous prime is 572142491. The next prime is 572142523. The reversal of 572142509 is 905241275.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 534626884 + 37515625 = 23122^2 + 6125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-572142509 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (572142539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286071254 + 286071255.

It is an arithmetic number, because the mean of its divisors is an integer number (286071255).

Almost surely, 2^572142509 is an apocalyptic number.

It is an amenable number.

572142509 is a deficient number, since it is larger than the sum of its proper divisors (1).

572142509 is an equidigital number, since it uses as much as digits as its factorization.

572142509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 572142509 is about 23919.5006009741. The cubic root of 572142509 is about 830.1719820710.

The spelling of 572142509 in words is "five hundred seventy-two million, one hundred forty-two thousand, five hundred nine".