572673221 has 2 divisors, whose sum is σ = 572673222. Its totient is φ = 572673220.

The previous prime is 572673217. The next prime is 572673229. The reversal of 572673221 is 122376275.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 404452321 + 168220900 = 20111^2 + 12970^2 .

It is a cyclic number.

It is not a de Polignac number, because 572673221 - 2² = 572673217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (572673229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286336610 + 286336611.

It is an arithmetic number, because the mean of its divisors is an integer number (286336611).

Almost surely, 2^572673221 is an apocalyptic number.

It is an amenable number.

572673221 is a deficient number, since it is larger than the sum of its proper divisors (1).

572673221 is an equidigital number, since it uses as much as digits as its factorization.

572673221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 35.

The square root of 572673221 is about 23930.5917394451. The cubic root of 572673221 is about 830.4285883477.

The spelling of 572673221 in words is "five hundred seventy-two million, six hundred seventy-three thousand, two hundred twenty-one".