2515855 has 16 divisors (see below), whose sum is σ = 3193344. Its totient is φ = 1899040.

The previous prime is 2515853. The next prime is 2515859. The reversal of 2515855 is 5585152.

It is not a de Polignac number, because 2515855 - 2¹ = 2515853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2515853) 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, 14982 + ... + 15148.

It is an arithmetic number, because the mean of its divisors is an integer number (199584).

2^2515855 is an apocalyptic number.

2515855 is a deficient number, since it is larger than the sum of its proper divisors (677489).

2515855 is a wasteful number, since it uses less digits than its factorization.

2515855 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 10000, while the sum is 31.

The square root of 2515855 is about 1586.1446970564. The cubic root of 2515855 is about 136.0071903638.

The spelling of 2515855 in words is "two million, five hundred fifteen thousand, eight hundred fifty-five".