16553085 has 24 divisors (see below), whose sum is σ = 27995040. Its totient is φ = 8328960.

The previous prime is 16553081. The next prime is 16553111. The reversal of 16553085 is 58035561.

It is not a de Polignac number, because 16553085 - 2² = 16553081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16553081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68565 + ... + 68805.

It is an arithmetic number, because the mean of its divisors is an integer number (1166460).

Almost surely, 2^16553085 is an apocalyptic number.

16553085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16553085 is a deficient number, since it is larger than the sum of its proper divisors (11441955).

16553085 is an equidigital number, since it uses as much as digits as its factorization.

16553085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 16553085 is about 4068.5482668883. The cubic root of 16553085 is about 254.8548963010.

The spelling of 16553085 in words is "sixteen million, five hundred fifty-three thousand, eighty-five".