2159885 has 32 divisors (see below), whose sum is σ = 3290112. Its totient is φ = 1324800.

The previous prime is 2159881. The next prime is 2159887. The reversal of 2159885 is 5889512.

It is not a de Polignac number, because 2159885 - 2² = 2159881 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159881) 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, 21335 + ... + 21435.

It is an arithmetic number, because the mean of its divisors is an integer number (102816).

2^2159885 is an apocalyptic number.

It is an amenable number.

2159885 is a deficient number, since it is larger than the sum of its proper divisors (1130227).

2159885 is a wasteful number, since it uses less digits than its factorization.

2159885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173.

The product of its digits is 28800, while the sum is 38.

The square root of 2159885 is about 1469.6547213546. The cubic root of 2159885 is about 129.2637872872.

The spelling of 2159885 in words is "two million, one hundred fifty-nine thousand, eight hundred eighty-five".