2591871 has 8 divisors (see below), whose sum is σ = 3659184. Its totient is φ = 1626240.

The previous prime is 2591857. The next prime is 2591891. The reversal of 2591871 is 1781952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2591871 - 2⁵ = 2591839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2591821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25360 + ... + 25461.

It is an arithmetic number, because the mean of its divisors is an integer number (457398).

2^2591871 is an apocalyptic number.

2591871 is a deficient number, since it is larger than the sum of its proper divisors (1067313).

2591871 is a wasteful number, since it uses less digits than its factorization.

2591871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50841.

The product of its digits is 5040, while the sum is 33.

The square root of 2591871 is about 1609.9288804168. The cubic root of 2591871 is about 137.3634302393.

The spelling of 2591871 in words is "two million, five hundred ninety-one thousand, eight hundred seventy-one".