16505441 has 16 divisors (see below), whose sum is σ = 17641728. Its totient is φ = 15422400.

The previous prime is 16505431. The next prime is 16505443. The reversal of 16505441 is 14450561.

It is a cyclic number.

It is not a de Polignac number, because 16505441 - 2¹⁰ = 16504417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16505441.

It is not an unprimeable number, because it can be changed into a prime (16505443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160196 + ... + 160298.

It is an arithmetic number, because the mean of its divisors is an integer number (1102608).

Almost surely, 2^16505441 is an apocalyptic number.

It is an amenable number.

16505441 is a deficient number, since it is larger than the sum of its proper divisors (1136287).

16505441 is a wasteful number, since it uses less digits than its factorization.

16505441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 16505441 is about 4062.6888879165. The cubic root of 16505441 is about 254.6101488739.

The spelling of 16505441 in words is "sixteen million, five hundred five thousand, four hundred forty-one".