2153515 has 16 divisors (see below), whose sum is σ = 3181248. Its totient is φ = 1362816.

The previous prime is 2153507. The next prime is 2153519. The reversal of 2153515 is 5153512.

It is not a de Polignac number, because 2153515 - 2³ = 2153507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2153519) 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, 1912 + ... + 2821.

It is an arithmetic number, because the mean of its divisors is an integer number (198828).

2^2153515 is an apocalyptic number.

2153515 is a deficient number, since it is larger than the sum of its proper divisors (1027733).

2153515 is a wasteful number, since it uses less digits than its factorization.

2153515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4758.

The product of its digits is 750, while the sum is 22.

The square root of 2153515 is about 1467.4859454182. The cubic root of 2153515 is about 129.1365858961.

The spelling of 2153515 in words is "two million, one hundred fifty-three thousand, five hundred fifteen".