16981275 has 24 divisors (see below), whose sum is σ = 28216944. Its totient is φ = 9011200.

The previous prime is 16981247. The next prime is 16981303. The reversal of 16981275 is 57218961.

It is an interprime number because it is at equal distance from previous prime (16981247) and next prime (16981303).

It is not a de Polignac number, because 16981275 - 2⁵ = 16981243 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18835 + ... + 19715.

It is an arithmetic number, because the mean of its divisors is an integer number (1175706).

Almost surely, 2^16981275 is an apocalyptic number.

16981275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16981275 is a deficient number, since it is larger than the sum of its proper divisors (11235669).

16981275 is a wasteful number, since it uses less digits than its factorization.

16981275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151 (or 1146 counting only the distinct ones).

The product of its digits is 30240, while the sum is 39.

The square root of 16981275 is about 4120.8342601954. The cubic root of 16981275 is about 257.0337180144.

The spelling of 16981275 in words is "sixteen million, nine hundred eighty-one thousand, two hundred seventy-five".