572644321 has 2 divisors, whose sum is σ = 572644322. Its totient is φ = 572644320.

The previous prime is 572644297. The next prime is 572644351. The reversal of 572644321 is 123446275.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 570684321 + 1960000 = 23889^2 + 1400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-572644321 is a prime.

It is not a weakly prime, because it can be changed into another prime (572644351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286322160 + 286322161.

It is an arithmetic number, because the mean of its divisors is an integer number (286322161).

Almost surely, 2^572644321 is an apocalyptic number.

It is an amenable number.

572644321 is a deficient number, since it is larger than the sum of its proper divisors (1).

572644321 is an equidigital number, since it uses as much as digits as its factorization.

572644321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 34.

The square root of 572644321 is about 23929.9879022117. The cubic root of 572644321 is about 830.4146188976.

The spelling of 572644321 in words is "five hundred seventy-two million, six hundred forty-four thousand, three hundred twenty-one".