2166513 has 16 divisors (see below), whose sum is σ = 3072000. Its totient is φ = 1354320.

The previous prime is 2166511. The next prime is 2166523. The reversal of 2166513 is 3156612.

It is not a de Polignac number, because 2166513 - 2¹ = 2166511 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2166511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10788 + ... + 10986.

It is an arithmetic number, because the mean of its divisors is an integer number (192000).

2^2166513 is an apocalyptic number.

It is an amenable number.

2166513 is a deficient number, since it is larger than the sum of its proper divisors (905487).

2166513 is a wasteful number, since it uses less digits than its factorization.

2166513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412.

The product of its digits is 1080, while the sum is 24.

The square root of 2166513 is about 1471.9079454912. The cubic root of 2166513 is about 129.3958754151.

Subtracting 2166513 from its reverse (3156612), we obtain a palindrome (990099).

The spelling of 2166513 in words is "two million, one hundred sixty-six thousand, five hundred thirteen".