2591571 has 16 divisors (see below), whose sum is σ = 3663360. Its totient is φ = 1629320.

The previous prime is 2591551. The next prime is 2591579. The reversal of 2591571 is 1751952.

It is not a de Polignac number, because 2591571 - 2⁵ = 2591539 is a prime.

2591571 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2591579) 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, 36466 + ... + 36536.

It is an arithmetic number, because the mean of its divisors is an integer number (228960).

2^2591571 is an apocalyptic number.

2591571 is a deficient number, since it is larger than the sum of its proper divisors (1071789).

2591571 is an frugal number, since it uses more digits than its factorization.

2591571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 97 counting only the distinct ones).

The product of its digits is 3150, while the sum is 30.

The square root of 2591571 is about 1609.8357059029. The cubic root of 2591571 is about 137.3581302560.

It can be divided in two parts, 259 and 1571, that added together give a triangular number (1830 = T₆₀).

The spelling of 2591571 in words is "two million, five hundred ninety-one thousand, five hundred seventy-one".