572741621 has 2 divisors, whose sum is σ = 572741622. Its totient is φ = 572741620.

The previous prime is 572741591. The next prime is 572741629. The reversal of 572741621 is 126147275.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 572644900 + 96721 = 23930^2 + 311^2 .

It is a cyclic number.

It is not a de Polignac number, because 572741621 - 2⁶ = 572741557 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 (572741629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286370810 + 286370811.

It is an arithmetic number, because the mean of its divisors is an integer number (286370811).

Almost surely, 2^572741621 is an apocalyptic number.

It is an amenable number.

572741621 is a deficient number, since it is larger than the sum of its proper divisors (1).

572741621 is an equidigital number, since it uses as much as digits as its factorization.

572741621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 35.

The square root of 572741621 is about 23932.0208298422. The cubic root of 572741621 is about 830.4616491184.

Adding to 572741621 its reverse (126147275), we get a palindrome (698888896).

The spelling of 572741621 in words is "five hundred seventy-two million, seven hundred forty-one thousand, six hundred twenty-one".