2503863 has 6 divisors (see below), whose sum is σ = 3616704. Its totient is φ = 1669236.

The previous prime is 2503859. The next prime is 2503871. The reversal of 2503863 is 3683052.

It is not a de Polignac number, because 2503863 - 2² = 2503859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2503873) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139095 + ... + 139112.

It is an arithmetic number, because the mean of its divisors is an integer number (602784).

2^2503863 is an apocalyptic number.

2503863 is a deficient number, since it is larger than the sum of its proper divisors (1112841).

2503863 is a wasteful number, since it uses less digits than its factorization.

2503863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278213 (or 278210 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 2503863 is about 1582.3599464092. The cubic root of 2503863 is about 135.7907501564.

The spelling of 2503863 in words is "two million, five hundred three thousand, eight hundred sixty-three".