2591403 has 4 divisors (see below), whose sum is σ = 3455208. Its totient is φ = 1727600.

The previous prime is 2591401. The next prime is 2591419. The reversal of 2591403 is 3041952.

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

It is a cyclic number.

It is not a de Polignac number, because 2591403 - 2¹ = 2591401 is a prime.

It is a D-number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (2591401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431898 + ... + 431903.

It is an arithmetic number, because the mean of its divisors is an integer number (863802).

2^2591403 is an apocalyptic number.

2591403 is a deficient number, since it is larger than the sum of its proper divisors (863805).

2591403 is an equidigital number, since it uses as much as digits as its factorization.

2591403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863804.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 2591403 is about 1609.7835258195. The cubic root of 2591403 is about 137.3551620867.

The spelling of 2591403 in words is "two million, five hundred ninety-one thousand, four hundred three".