23149573 has 2 divisors, whose sum is σ = 23149574. Its totient is φ = 23149572.

The previous prime is 23149571. The next prime is 23149579. The reversal of 23149573 is 37594132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22877089 + 272484 = 4783^2 + 522^2 .

It is a cyclic number.

It is not a de Polignac number, because 23149573 - 2¹ = 23149571 is a prime.

Together with 23149571, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23149571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11574786 + 11574787.

It is an arithmetic number, because the mean of its divisors is an integer number (11574787).

Almost surely, 2^23149573 is an apocalyptic number.

It is an amenable number.

23149573 is a deficient number, since it is larger than the sum of its proper divisors (1).

23149573 is an equidigital number, since it uses as much as digits as its factorization.

23149573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 34.

The square root of 23149573 is about 4811.4003159164. The cubic root of 23149573 is about 285.0018385026.

The spelling of 23149573 in words is "twenty-three million, one hundred forty-nine thousand, five hundred seventy-three".