2120515 has 4 divisors (see below), whose sum is σ = 2544624. Its totient is φ = 1696408.

The previous prime is 2120513. The next prime is 2120537. The reversal of 2120515 is 5150212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2120515 - 2¹ = 2120513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212047 + ... + 212056.

It is an arithmetic number, because the mean of its divisors is an integer number (636156).

2^2120515 is an apocalyptic number.

2120515 is a deficient number, since it is larger than the sum of its proper divisors (424109).

2120515 is an equidigital number, since it uses as much as digits as its factorization.

2120515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424108.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 2120515 is about 1456.1988188431. The cubic root of 2120515 is about 128.4735672137.

Adding to 2120515 its reverse (5150212), we get a palindrome (7270727).

The spelling of 2120515 in words is "two million, one hundred twenty thousand, five hundred fifteen".