15172073 has 4 divisors (see below), whose sum is σ = 17339520. Its totient is φ = 13004628.

The previous prime is 15172067. The next prime is 15172081. The reversal of 15172073 is 37027151.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37027151 = 7 ⋅5289593.

It is not a de Polignac number, because 15172073 - 2⁸ = 15171817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15172043) 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, 1083713 + ... + 1083726.

It is an arithmetic number, because the mean of its divisors is an integer number (4334880).

Almost surely, 2^15172073 is an apocalyptic number.

It is an amenable number.

15172073 is a deficient number, since it is larger than the sum of its proper divisors (2167447).

15172073 is an equidigital number, since it uses as much as digits as its factorization.

15172073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2167446.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 15172073 is about 3895.1345291273. The cubic root of 15172073 is about 247.5606653317.

The spelling of 15172073 in words is "fifteen million, one hundred seventy-two thousand, seventy-three".