16055409 has 4 divisors (see below), whose sum is σ = 21407216. Its totient is φ = 10703604.

The previous prime is 16055393. The next prime is 16055453. The reversal of 16055409 is 90455061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16055409 - 2⁴ = 16055393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16055309) 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, 2675899 + ... + 2675904.

It is an arithmetic number, because the mean of its divisors is an integer number (5351804).

Almost surely, 2^16055409 is an apocalyptic number.

It is an amenable number.

16055409 is a deficient number, since it is larger than the sum of its proper divisors (5351807).

16055409 is an equidigital number, since it uses as much as digits as its factorization.

16055409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5351806.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 16055409 is about 4006.9201389596. The cubic root of 16055409 is about 252.2747538688.

The spelling of 16055409 in words is "sixteen million, fifty-five thousand, four hundred nine".