16954561 has 8 divisors (see below), whose sum is σ = 18383400. Its totient is φ = 15543552.

The previous prime is 16954549. The next prime is 16954571. The reversal of 16954561 is 16545961.

It can be written as a sum of positive squares in 4 ways, for example, as 600625 + 16353936 = 775^2 + 4044^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16954561 - 2⁷ = 16954433 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 16954561.

It is not an unprimeable number, because it can be changed into a prime (16954501) 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, 2440 + ... + 6313.

It is an arithmetic number, because the mean of its divisors is an integer number (2297925).

Almost surely, 2^16954561 is an apocalyptic number.

It is an amenable number.

16954561 is a deficient number, since it is larger than the sum of its proper divisors (1428839).

16954561 is a wasteful number, since it uses less digits than its factorization.

16954561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8915.

The product of its digits is 32400, while the sum is 37.

The square root of 16954561 is about 4117.5916504675. The cubic root of 16954561 is about 256.8988635447.

The spelling of 16954561 in words is "sixteen million, nine hundred fifty-four thousand, five hundred sixty-one".