16055381 has 4 divisors (see below), whose sum is σ = 16064064. Its totient is φ = 16046700.

The previous prime is 16055371. The next prime is 16055393. The reversal of 16055381 is 18355061.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16055381 is a prime.

It is a super-2 number, since 2×16055381² = 515550518110322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16055321) 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, 335 + ... + 5676.

It is an arithmetic number, because the mean of its divisors is an integer number (4016016).

Almost surely, 2^16055381 is an apocalyptic number.

It is an amenable number.

16055381 is a deficient number, since it is larger than the sum of its proper divisors (8683).

16055381 is an equidigital number, since it uses as much as digits as its factorization.

16055381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8682.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 16055381 is about 4006.9166450027. The cubic root of 16055381 is about 252.2746072163.

The spelling of 16055381 in words is "sixteen million, fifty-five thousand, three hundred eighty-one".