23573573 has 2 divisors, whose sum is σ = 23573574. Its totient is φ = 23573572.

The previous prime is 23573569. The next prime is 23573579. The reversal of 23573573 is 37537532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19070689 + 4502884 = 4367^2 + 2122^2 .

It is a cyclic number.

It is not a de Polignac number, because 23573573 - 2² = 23573569 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23573579) 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, 11786786 + 11786787.

It is an arithmetic number, because the mean of its divisors is an integer number (11786787).

Almost surely, 2^23573573 is an apocalyptic number.

It is an amenable number.

23573573 is a deficient number, since it is larger than the sum of its proper divisors (1).

23573573 is an equidigital number, since it uses as much as digits as its factorization.

23573573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 66150, while the sum is 35.

The square root of 23573573 is about 4855.2624027955. The cubic root of 23573573 is about 286.7313223251.

The spelling of 23573573 in words is "twenty-three million, five hundred seventy-three thousand, five hundred seventy-three".