16172105 has 8 divisors (see below), whose sum is σ = 20250432. Its totient is φ = 12375088.

The previous prime is 16172069. The next prime is 16172119. The reversal of 16172105 is 50127161.

16172105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 16172105 - 2⁶ = 16172041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 8.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70199 + ... + 70428.

It is an arithmetic number, because the mean of its divisors is an integer number (2531304).

Almost surely, 2^16172105 is an apocalyptic number.

It is an amenable number.

16172105 is a deficient number, since it is larger than the sum of its proper divisors (4078327).

16172105 is a wasteful number, since it uses less digits than its factorization.

16172105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140655.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 16172105 is about 4021.4555822488. The cubic root of 16172105 is about 252.8844843358.

Adding to 16172105 its reverse (50127161), we get a palindrome (66299266).

The spelling of 16172105 in words is "sixteen million, one hundred seventy-two thousand, one hundred five".