23289557 has 2 divisors, whose sum is σ = 23289558. Its totient is φ = 23289556.

The previous prime is 23289533. The next prime is 23289559. The reversal of 23289557 is 75598232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14205361 + 9084196 = 3769^2 + 3014^2 .

It is a cyclic number.

It is not a de Polignac number, because 23289557 - 2⁶ = 23289493 is a prime.

Together with 23289559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23289559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11644778 + 11644779.

It is an arithmetic number, because the mean of its divisors is an integer number (11644779).

Almost surely, 2^23289557 is an apocalyptic number.

It is an amenable number.

23289557 is a deficient number, since it is larger than the sum of its proper divisors (1).

23289557 is an equidigital number, since it uses as much as digits as its factorization.

23289557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 41.

The square root of 23289557 is about 4825.9255070919. The cubic root of 23289557 is about 285.5751471455.

The spelling of 23289557 in words is "twenty-three million, two hundred eighty-nine thousand, five hundred fifty-seven".