23437157 has 2 divisors, whose sum is σ = 23437158. Its totient is φ = 23437156.

The previous prime is 23437153. The next prime is 23437159. The reversal of 23437157 is 75173432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23338561 + 98596 = 4831^2 + 314^2 .

It is a cyclic number.

It is not a de Polignac number, because 23437157 - 2² = 23437153 is a prime.

Together with 23437159, 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 (23437153) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11718578 + 11718579.

It is an arithmetic number, because the mean of its divisors is an integer number (11718579).

Almost surely, 2^23437157 is an apocalyptic number.

It is an amenable number.

23437157 is a deficient number, since it is larger than the sum of its proper divisors (1).

23437157 is an equidigital number, since it uses as much as digits as its factorization.

23437157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 32.

The square root of 23437157 is about 4841.1937577420. The cubic root of 23437157 is about 286.1771645889.

The spelling of 23437157 in words is "twenty-three million, four hundred thirty-seven thousand, one hundred fifty-seven".