16561094 has 16 divisors (see below), whose sum is σ = 28694736. Its totient is φ = 7084800.

The previous prime is 16561093. The next prime is 16561147. The reversal of 16561094 is 49016561.

It is an alternating number because its digits alternate between odd and even.

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 16561094.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16561091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21767 + ... + 22514.

It is an arithmetic number, because the mean of its divisors is an integer number (1793421).

Almost surely, 2^16561094 is an apocalyptic number.

16561094 is a deficient number, since it is larger than the sum of its proper divisors (12133642).

16561094 is a wasteful number, since it uses less digits than its factorization.

16561094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44311.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 16561094 is about 4069.5324055719. The cubic root of 16561094 is about 254.8959924423.

The spelling of 16561094 in words is "sixteen million, five hundred sixty-one thousand, ninety-four".