16672255 has 4 divisors (see below), whose sum is σ = 20006712. Its totient is φ = 13337800.

The previous prime is 16672241. The next prime is 16672259. The reversal of 16672255 is 55227661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55227661 = 19 ⋅2906719.

It is not a de Polignac number, because 16672255 - 2¹⁵ = 16639487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16672255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16672259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1667221 + ... + 1667230.

It is an arithmetic number, because the mean of its divisors is an integer number (5001678).

Almost surely, 2^16672255 is an apocalyptic number.

16672255 is a deficient number, since it is larger than the sum of its proper divisors (3334457).

16672255 is an equidigital number, since it uses as much as digits as its factorization.

16672255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3334456.

The product of its digits is 25200, while the sum is 34.

The square root of 16672255 is about 4083.1672755350. The cubic root of 16672255 is about 255.4650235579.

The spelling of 16672255 in words is "sixteen million, six hundred seventy-two thousand, two hundred fifty-five".