23172653 has 16 divisors (see below), whose sum is σ = 27576960. Its totient is φ = 19051200.

The previous prime is 23172641. The next prime is 23172659. The reversal of 23172653 is 35627132.

It is not a de Polignac number, because 23172653 - 2²⁰ = 22124077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23172659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42563 + ... + 43103.

It is an arithmetic number, because the mean of its divisors is an integer number (1723560).

Almost surely, 2^23172653 is an apocalyptic number.

It is an amenable number.

23172653 is a deficient number, since it is larger than the sum of its proper divisors (4404307).

23172653 is a wasteful number, since it uses less digits than its factorization.

23172653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788.

The product of its digits is 7560, while the sum is 29.

The square root of 23172653 is about 4813.7981885409. The cubic root of 23172653 is about 285.0965221441.

Adding to 23172653 its reverse (35627132), we get a palindrome (58799785).

The spelling of 23172653 in words is "twenty-three million, one hundred seventy-two thousand, six hundred fifty-three".