23272151 has 4 divisors (see below), whose sum is σ = 26596752. Its totient is φ = 19947552.

The previous prime is 23272127. The next prime is 23272157. The reversal of 23272151 is 15127232.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 23272151 - 2⁶ = 23272087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23272157) 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, 1662290 + ... + 1662303.

It is an arithmetic number, because the mean of its divisors is an integer number (6649188).

Almost surely, 2^23272151 is an apocalyptic number.

23272151 is a deficient number, since it is larger than the sum of its proper divisors (3324601).

23272151 is an equidigital number, since it uses as much as digits as its factorization.

23272151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3324600.

The product of its digits is 840, while the sum is 23.

The square root of 23272151 is about 4824.1217853616. The cubic root of 23272151 is about 285.5039856394.

Adding to 23272151 its reverse (15127232), we get a palindrome (38399383).

The spelling of 23272151 in words is "twenty-three million, two hundred seventy-two thousand, one hundred fifty-one".