16355091 has 4 divisors (see below), whose sum is σ = 21806792. Its totient is φ = 10903392.

The previous prime is 16355083. The next prime is 16355149. The reversal of 16355091 is 19055361.

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

It is not a de Polignac number, because 16355091 - 2³ = 16355083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16355021) 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, 2725846 + ... + 2725851.

It is an arithmetic number, because the mean of its divisors is an integer number (5451698).

Almost surely, 2^16355091 is an apocalyptic number.

16355091 is a deficient number, since it is larger than the sum of its proper divisors (5451701).

16355091 is an equidigital number, since it uses as much as digits as its factorization.

16355091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5451700.

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 16355091 is about 4044.1428016330. The cubic root of 16355091 is about 253.8346982822.

The spelling of 16355091 in words is "sixteen million, three hundred fifty-five thousand, ninety-one".