572751721 has 2 divisors, whose sum is σ = 572751722. Its totient is φ = 572751720.

The previous prime is 572751689. The next prime is 572751731. The reversal of 572751721 is 127157275.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 522625321 + 50126400 = 22861^2 + 7080^2 .

It is a cyclic number.

It is not a de Polignac number, because 572751721 - 2⁵ = 572751689 is a prime.

It is not a weakly prime, because it can be changed into another prime (572751731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286375860 + 286375861.

It is an arithmetic number, because the mean of its divisors is an integer number (286375861).

Almost surely, 2^572751721 is an apocalyptic number.

It is an amenable number.

572751721 is a deficient number, since it is larger than the sum of its proper divisors (1).

572751721 is an equidigital number, since it uses as much as digits as its factorization.

572751721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34300, while the sum is 37.

The square root of 572751721 is about 23932.2318432694. The cubic root of 572751721 is about 830.4665306759.

It can be divided in two parts, 57275 and 1721, that added together give a triangular number (58996 = T₃₄₃).

The spelling of 572751721 in words is "five hundred seventy-two million, seven hundred fifty-one thousand, seven hundred twenty-one".