2503913 has 4 divisors (see below), whose sum is σ = 2651220. Its totient is φ = 2356608.

The previous prime is 2503909. The next prime is 2503927. The reversal of 2503913 is 3193052.

It is a happy number.

2503913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1708249 + 795664 = 1307^2 + 892^2 .

It is not a de Polignac number, because 2503913 - 2² = 2503909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2503213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73628 + ... + 73661.

It is an arithmetic number, because the mean of its divisors is an integer number (662805).

2^2503913 is an apocalyptic number.

It is an amenable number.

2503913 is a deficient number, since it is larger than the sum of its proper divisors (147307).

2503913 is a wasteful number, since it uses less digits than its factorization.

2503913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147306.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 2503913 is about 1582.3757455168. The cubic root of 2503913 is about 135.7916540254.

Adding to 2503913 its reverse (3193052), we get a palindrome (5696965).

It can be divided in two parts, 25039 and 13, that added together give a palindrome (25052).

The spelling of 2503913 in words is "two million, five hundred three thousand, nine hundred thirteen".