573685921 has 2 divisors, whose sum is σ = 573685922. Its totient is φ = 573685920.

The previous prime is 573685897. The next prime is 573685933. The reversal of 573685921 is 129586375.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 535691025 + 37994896 = 23145^2 + 6164^2 .

It is a cyclic number.

It is not a de Polignac number, because 573685921 - 2¹³ = 573677729 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (573685951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286842960 + 286842961.

It is an arithmetic number, because the mean of its divisors is an integer number (286842961).

Almost surely, 2^573685921 is an apocalyptic number.

It is an amenable number.

573685921 is a deficient number, since it is larger than the sum of its proper divisors (1).

573685921 is an equidigital number, since it uses as much as digits as its factorization.

573685921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 46.

The square root of 573685921 is about 23951.7415024461. The cubic root of 573685921 is about 830.9178026546.

The spelling of 573685921 in words is "five hundred seventy-three million, six hundred eighty-five thousand, nine hundred twenty-one".