16172055 has 40 divisors (see below), whose sum is σ = 29440752. Its totient is φ = 8491392.

The previous prime is 16172047. The next prime is 16172069. The reversal of 16172055 is 55027161.

It is not a de Polignac number, because 16172055 - 2³ = 16172047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 29292 + ... + 29838.

Almost surely, 2^16172055 is an apocalyptic number.

16172055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16172055 is a deficient number, since it is larger than the sum of its proper divisors (13268697).

16172055 is an equidigital number, since it uses as much as digits as its factorization.

16172055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 628 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 16172055 is about 4021.4493655895. The cubic root of 16172055 is about 252.8842237175.

16172055 divided by its sum of digits (27) gives a triangular number (598965 = T₁₀₉₄).

The spelling of 16172055 in words is "sixteen million, one hundred seventy-two thousand, fifty-five".