2515863 has 16 divisors (see below), whose sum is σ = 3916800. Its totient is φ = 1406496.

The previous prime is 2515859. The next prime is 2515871. The reversal of 2515863 is 3685152.

It is not a de Polignac number, because 2515863 - 2² = 2515859 is a prime.

2515863 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2515863.

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, 288 + ... + 2261.

It is an arithmetic number, because the mean of its divisors is an integer number (244800).

2^2515863 is an apocalyptic number.

2515863 is a deficient number, since it is larger than the sum of its proper divisors (1400937).

2515863 is a wasteful number, since it uses less digits than its factorization.

2515863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2606.

The product of its digits is 7200, while the sum is 30.

The square root of 2515863 is about 1586.1472188924. The cubic root of 2515863 is about 136.0073345237.

The spelling of 2515863 in words is "two million, five hundred fifteen thousand, eight hundred sixty-three".