23616157 has 4 divisors (see below), whose sum is σ = 23939740. Its totient is φ = 23292576.

The previous prime is 23616143. The next prime is 23616167. The reversal of 23616157 is 75161632.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5134756 + 18481401 = 2266^2 + 4299^2 .

It is a cyclic number.

It is not a de Polignac number, because 23616157 - 2⁷ = 23616029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23616127) 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 in 3 ways as a sum of consecutive naturals, for example, 161682 + ... + 161827.

It is an arithmetic number, because the mean of its divisors is an integer number (5984935).

Almost surely, 2^23616157 is an apocalyptic number.

It is an amenable number.

23616157 is a deficient number, since it is larger than the sum of its proper divisors (323583).

23616157 is an equidigital number, since it uses as much as digits as its factorization.

23616157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323582.

The product of its digits is 7560, while the sum is 31.

The square root of 23616157 is about 4859.6457689836. The cubic root of 23616157 is about 286.9038717831.

Adding to 23616157 its reverse (75161632), we get a palindrome (98777789).

The spelling of 23616157 in words is "twenty-three million, six hundred sixteen thousand, one hundred fifty-seven".