23232157 has 4 divisors (see below), whose sum is σ = 25019260. Its totient is φ = 21445056.

The previous prime is 23232137. The next prime is 23232173. The reversal of 23232157 is 75123232.

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 2493241 + 20738916 = 1579^2 + 4554^2 .

It is a cyclic number.

It is not a de Polignac number, because 23232157 - 2¹⁵ = 23199389 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 (23232107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 893532 + ... + 893557.

It is an arithmetic number, because the mean of its divisors is an integer number (6254815).

Almost surely, 2^23232157 is an apocalyptic number.

It is an amenable number.

23232157 is a deficient number, since it is larger than the sum of its proper divisors (1787103).

23232157 is a wasteful number, since it uses less digits than its factorization.

23232157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1787102.

The product of its digits is 2520, while the sum is 25.

The square root of 23232157 is about 4819.9747924652. The cubic root of 23232157 is about 285.3403423553.

Adding to 23232157 its reverse (75123232), we get a palindrome (98355389).

The spelling of 23232157 in words is "twenty-three million, two hundred thirty-two thousand, one hundred fifty-seven".