16550605 has 8 divisors (see below), whose sum is σ = 21029112. Its totient is φ = 12461568.

The previous prime is 16550603. The next prime is 16550609. The reversal of 16550605 is 50605561.

It can be written as a sum of positive squares in 4 ways, for example, as 2064969 + 14485636 = 1437^2 + 3806^2 .

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 16550605 - 2¹ = 16550603 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 (16550603) 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, 97272 + ... + 97441.

It is an arithmetic number, because the mean of its divisors is an integer number (2628639).

Almost surely, 2^16550605 is an apocalyptic number.

It is an amenable number.

16550605 is a deficient number, since it is larger than the sum of its proper divisors (4478507).

16550605 is a wasteful number, since it uses less digits than its factorization.

16550605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194735.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 16550605 is about 4068.2434784560. The cubic root of 16550605 is about 254.8421681256.

The spelling of 16550605 in words is "sixteen million, five hundred fifty thousand, six hundred five".