23557159 has 2 divisors, whose sum is σ = 23557160. Its totient is φ = 23557158.

The previous prime is 23557147. The next prime is 23557211. The reversal of 23557159 is 95175532.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23557159 - 2¹¹ = 23555111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23557559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11778579 + 11778580.

It is an arithmetic number, because the mean of its divisors is an integer number (11778580).

Almost surely, 2^23557159 is an apocalyptic number.

23557159 is a deficient number, since it is larger than the sum of its proper divisors (1).

23557159 is an equidigital number, since it uses as much as digits as its factorization.

23557159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47250, while the sum is 37.

The square root of 23557159 is about 4853.5717775675. The cubic root of 23557159 is about 286.6647576641.

It can be divided in two parts, 23557 and 159, that added together give a square (23716 = 154²).

The spelling of 23557159 in words is "twenty-three million, five hundred fifty-seven thousand, one hundred fifty-nine".