574651621 has 2 divisors, whose sum is σ = 574651622. Its totient is φ = 574651620.

The previous prime is 574651607. The next prime is 574651643. The reversal of 574651621 is 126156475.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 571879396 + 2772225 = 23914^2 + 1665^2 .

It is a cyclic number.

It is not a de Polignac number, because 574651621 - 2⁵ = 574651589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (574651661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 287325810 + 287325811.

It is an arithmetic number, because the mean of its divisors is an integer number (287325811).

Almost surely, 2^574651621 is an apocalyptic number.

It is an amenable number.

574651621 is a deficient number, since it is larger than the sum of its proper divisors (1).

574651621 is an equidigital number, since it uses as much as digits as its factorization.

574651621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 37.

The square root of 574651621 is about 23971.8923116220. The cubic root of 574651621 is about 831.3837762650.

The spelling of 574651621 in words is "five hundred seventy-four million, six hundred fifty-one thousand, six hundred twenty-one".