16559445 has 32 divisors (see below), whose sum is σ = 32064768. Its totient is φ = 7123968.

The previous prime is 16559443. The next prime is 16559447. The reversal of 16559445 is 54495561.

It is an interprime number because it is at equal distance from previous prime (16559443) and next prime (16559447).

It is not a de Polignac number, because 16559445 - 2¹ = 16559443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16559441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2854 + ... + 6423.

It is an arithmetic number, because the mean of its divisors is an integer number (1002024).

Almost surely, 2^16559445 is an apocalyptic number.

16559445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16559445 is a deficient number, since it is larger than the sum of its proper divisors (15505323).

16559445 is a wasteful number, since it uses less digits than its factorization.

16559445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9309.

The product of its digits is 108000, while the sum is 39.

The square root of 16559445 is about 4069.3297973991. The cubic root of 16559445 is about 254.8875321026.

It can be divided in two parts, 165594 and 45, that multiplied together give a triangular number (7451730 = T₃₈₆₀).

The spelling of 16559445 in words is "sixteen million, five hundred fifty-nine thousand, four hundred forty-five".