16172459 has 4 divisors (see below), whose sum is σ = 16730160. Its totient is φ = 15614760.

The previous prime is 16172449. The next prime is 16172461. The reversal of 16172459 is 95427161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95427161 = 23 ⋅4149007.

It is not a de Polignac number, because 16172459 - 2⁸ = 16172203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16172449) 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, 278807 + ... + 278864.

It is an arithmetic number, because the mean of its divisors is an integer number (4182540).

Almost surely, 2^16172459 is an apocalyptic number.

16172459 is a deficient number, since it is larger than the sum of its proper divisors (557701).

16172459 is an equidigital number, since it uses as much as digits as its factorization.

16172459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557700.

The product of its digits is 15120, while the sum is 35.

The square root of 16172459 is about 4021.4995959219. The cubic root of 16172459 is about 252.8863294976.

The spelling of 16172459 in words is "sixteen million, one hundred seventy-two thousand, four hundred fifty-nine".