576225721 has 2 divisors, whose sum is σ = 576225722. Its totient is φ = 576225720.

The previous prime is 576225697. The next prime is 576225733. The reversal of 576225721 is 127522675.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 431143696 + 145082025 = 20764^2 + 12045^2 .

It is a cyclic number.

It is not a de Polignac number, because 576225721 - 2¹¹ = 576223673 is a prime.

It is a Chen prime.

It is equal to p_30146968 and since 576225721 and 30146968 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (576225821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 288112860 + 288112861.

It is an arithmetic number, because the mean of its divisors is an integer number (288112861).

Almost surely, 2^576225721 is an apocalyptic number.

It is an amenable number.

576225721 is a deficient number, since it is larger than the sum of its proper divisors (1).

576225721 is an equidigital number, since it uses as much as digits as its factorization.

576225721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58800, while the sum is 37.

The square root of 576225721 is about 24004.7020602215. The cubic root of 576225721 is about 832.1421998881.

The spelling of 576225721 in words is "five hundred seventy-six million, two hundred twenty-five thousand, seven hundred twenty-one".