2164559 has 8 divisors (see below), whose sum is σ = 2309328. Its totient is φ = 2021760.

The previous prime is 2164529. The next prime is 2164571. The reversal of 2164559 is 9554612.

It is a happy number.

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 2164559 - 2¹² = 2160463 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164529) 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, 2264 + ... + 3074.

It is an arithmetic number, because the mean of its divisors is an integer number (288666).

2^2164559 is an apocalyptic number.

2164559 is a deficient number, since it is larger than the sum of its proper divisors (144769).

2164559 is a wasteful number, since it uses less digits than its factorization.

2164559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985.

The product of its digits is 10800, while the sum is 32.

The square root of 2164559 is about 1471.2440314237. The cubic root of 2164559 is about 129.3569625643.

The spelling of 2164559 in words is "two million, one hundred sixty-four thousand, five hundred fifty-nine".