23172953 has 4 divisors (see below), whose sum is σ = 23289600. Its totient is φ = 23056308.

The previous prime is 23172949. The next prime is 23172973. The reversal of 23172953 is 35927132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23172953 - 2² = 23172949 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23172923) 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, 58025 + ... + 58422.

It is an arithmetic number, because the mean of its divisors is an integer number (5822400).

Almost surely, 2^23172953 is an apocalyptic number.

It is an amenable number.

23172953 is a deficient number, since it is larger than the sum of its proper divisors (116647).

23172953 is a wasteful number, since it uses less digits than its factorization.

23172953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116646.

The product of its digits is 11340, while the sum is 32.

The square root of 23172953 is about 4813.8293488656. The cubic root of 23172953 is about 285.0977524534.

The spelling of 23172953 in words is "twenty-three million, one hundred seventy-two thousand, nine hundred fifty-three".