20324573 has 2 divisors, whose sum is σ = 20324574. Its totient is φ = 20324572.

The previous prime is 20324527. The next prime is 20324609. The reversal of 20324573 is 37542302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13344409 + 6980164 = 3653^2 + 2642^2 .

It is a cyclic number.

It is not a de Polignac number, because 20324573 - 2²² = 16130269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20324173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10162286 + 10162287.

It is an arithmetic number, because the mean of its divisors is an integer number (10162287).

Almost surely, 2^20324573 is an apocalyptic number.

It is an amenable number.

20324573 is a deficient number, since it is larger than the sum of its proper divisors (1).

20324573 is an equidigital number, since it uses as much as digits as its factorization.

20324573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 20324573 is about 4508.2782744635. The cubic root of 20324573 is about 272.9022670283.

Adding to 20324573 its reverse (37542302), we get a palindrome (57866875).

The spelling of 20324573 in words is "twenty million, three hundred twenty-four thousand, five hundred seventy-three".