2164515 has 16 divisors (see below), whose sum is σ = 3496608. Its totient is φ = 1143296.

The previous prime is 2164511. The next prime is 2164529. The reversal of 2164515 is 5154612.

It is a cyclic number.

It is not a de Polignac number, because 2164515 - 2² = 2164511 is a prime.

2164515 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2164511) 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, 1057 + ... + 2333.

It is an arithmetic number, because the mean of its divisors is an integer number (218538).

2^2164515 is an apocalyptic number.

2164515 is a deficient number, since it is larger than the sum of its proper divisors (1332093).

2164515 is a wasteful number, since it uses less digits than its factorization.

2164515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398.

The product of its digits is 1200, while the sum is 24.

The square root of 2164515 is about 1471.2290780161. The cubic root of 2164515 is about 129.3560860586.

The spelling of 2164515 in words is "two million, one hundred sixty-four thousand, five hundred fifteen".