16054405 has 4 divisors (see below), whose sum is σ = 19265292. Its totient is φ = 12843520.

The previous prime is 16054403. The next prime is 16054417. The reversal of 16054405 is 50445061.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2268036 + 13786369 = 1506^2 + 3713^2 .

It is not a de Polignac number, because 16054405 - 2¹ = 16054403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16054405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16054403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1605436 + ... + 1605445.

It is an arithmetic number, because the mean of its divisors is an integer number (4816323).

Almost surely, 2^16054405 is an apocalyptic number.

It is an amenable number.

16054405 is a deficient number, since it is larger than the sum of its proper divisors (3210887).

16054405 is an equidigital number, since it uses as much as digits as its factorization.

16054405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3210886.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 16054405 is about 4006.7948537453. The cubic root of 16054405 is about 252.2694952229.

Adding to 16054405 its reverse (50445061), we get a palindrome (66499466).

The spelling of 16054405 in words is "sixteen million, fifty-four thousand, four hundred five".