16554941 has 4 divisors (see below), whose sum is σ = 17828412. Its totient is φ = 15281472.

The previous prime is 16554919. The next prime is 16554949. The reversal of 16554941 is 14945561.

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 5359225 + 11195716 = 2315^2 + 3346^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16554941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16554949) by changing a digit.

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, 636716 + ... + 636741.

It is an arithmetic number, because the mean of its divisors is an integer number (4457103).

Almost surely, 2^16554941 is an apocalyptic number.

It is an amenable number.

16554941 is a deficient number, since it is larger than the sum of its proper divisors (1273471).

16554941 is a wasteful number, since it uses less digits than its factorization.

16554941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273470.

The product of its digits is 21600, while the sum is 35.

The square root of 16554941 is about 4068.7763516812. The cubic root of 16554941 is about 254.8644210716.

The spelling of 16554941 in words is "sixteen million, five hundred fifty-four thousand, nine hundred forty-one".