16555135 has 4 divisors (see below), whose sum is σ = 19866168. Its totient is φ = 13244104.

The previous prime is 16555111. The next prime is 16555151. The reversal of 16555135 is 53155561.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16555135 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16555097 and 16555106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1655509 + ... + 1655518.

It is an arithmetic number, because the mean of its divisors is an integer number (4966542).

Almost surely, 2^16555135 is an apocalyptic number.

16555135 is a deficient number, since it is larger than the sum of its proper divisors (3311033).

16555135 is an equidigital number, since it uses as much as digits as its factorization.

16555135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311032.

The product of its digits is 11250, while the sum is 31.

The square root of 16555135 is about 4068.8001917027. The cubic root of 16555135 is about 254.8654166153.

The spelling of 16555135 in words is "sixteen million, five hundred fifty-five thousand, one hundred thirty-five".