573417721 has 2 divisors, whose sum is σ = 573417722. Its totient is φ = 573417720.

The previous prime is 573417697. The next prime is 573417743. The reversal of 573417721 is 127714375.

It is a happy number.

573417721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 532917225 + 40500496 = 23085^2 + 6364^2 .

It is a cyclic number.

It is not a de Polignac number, because 573417721 - 2¹¹ = 573415673 is a prime.

It is not a weakly prime, because it can be changed into another prime (573417781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286708860 + 286708861.

It is an arithmetic number, because the mean of its divisors is an integer number (286708861).

Almost surely, 2^573417721 is an apocalyptic number.

It is an amenable number.

573417721 is a deficient number, since it is larger than the sum of its proper divisors (1).

573417721 is an equidigital number, since it uses as much as digits as its factorization.

573417721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41160, while the sum is 37.

The square root of 573417721 is about 23946.1420901155. The cubic root of 573417721 is about 830.7882968957.

The spelling of 573417721 in words is "five hundred seventy-three million, four hundred seventeen thousand, seven hundred twenty-one".