2152415 has 16 divisors (see below), whose sum is σ = 2755200. Its totient is φ = 1609632.

The previous prime is 2152399. The next prime is 2152427. The reversal of 2152415 is 5142512.

It is a cyclic number.

It is not a de Polignac number, because 2152415 - 2⁴ = 2152399 is a prime.

It is a super-3 number, since 3×2152415³ = 29915707933308220125, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13124 + ... + 13286.

It is an arithmetic number, because the mean of its divisors is an integer number (172200).

2^2152415 is an apocalyptic number.

2152415 is a deficient number, since it is larger than the sum of its proper divisors (602785).

2152415 is a wasteful number, since it uses less digits than its factorization.

2152415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326.

The product of its digits is 400, while the sum is 20.

The square root of 2152415 is about 1467.1111069036. Note that the first 4 decimals coincide. The cubic root of 2152415 is about 129.1145948045.

Adding to 2152415 its reverse (5142512), we get a palindrome (7294927).

The spelling of 2152415 in words is "two million, one hundred fifty-two thousand, four hundred fifteen".