16166455 has 4 divisors (see below), whose sum is σ = 19399752. Its totient is φ = 12933160.

The previous prime is 16166443. The next prime is 16166459. The reversal of 16166455 is 55466161.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 16166455 - 2⁷ = 16166327 is a prime.

It is a super-2 number, since 2×16166455² = 522708534534050, which contains 22 as substring.

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 16166455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16166459) 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, 1616641 + ... + 1616650.

It is an arithmetic number, because the mean of its divisors is an integer number (4849938).

Almost surely, 2^16166455 is an apocalyptic number.

16166455 is a deficient number, since it is larger than the sum of its proper divisors (3233297).

16166455 is an equidigital number, since it uses as much as digits as its factorization.

16166455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3233296.

The product of its digits is 21600, while the sum is 34.

The square root of 16166455 is about 4020.7530389219. The cubic root of 16166455 is about 252.8550310733.

It can be divided in two parts, 16166 and 455, that multiplied together give a triangular number (7355530 = T₃₈₃₅).

The spelling of 16166455 in words is "sixteen million, one hundred sixty-six thousand, four hundred fifty-five".