15172323 has 8 divisors (see below), whose sum is σ = 20359248. Its totient is φ = 10050144.

The previous prime is 15172303. The next prime is 15172343. The reversal of 15172323 is 32327151.

It is an interprime number because it is at equal distance from previous prime (15172303) and next prime (15172343).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15172323 - 2⁵ = 15172291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15172293 and 15172302.

It is not an unprimeable number, because it can be changed into a prime (15172303) 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 7 ways as a sum of consecutive naturals, for example, 15636 + ... + 16577.

It is an arithmetic number, because the mean of its divisors is an integer number (2544906).

Almost surely, 2^15172323 is an apocalyptic number.

15172323 is a deficient number, since it is larger than the sum of its proper divisors (5186925).

15172323 is a wasteful number, since it uses less digits than its factorization.

15172323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32373.

The product of its digits is 1260, while the sum is 24.

The square root of 15172323 is about 3895.1666203129. The cubic root of 15172323 is about 247.5620250629.

Adding to 15172323 its reverse (32327151), we get a palindrome (47499474).

The spelling of 15172323 in words is "fifteen million, one hundred seventy-two thousand, three hundred twenty-three".