2581371 has 12 divisors (see below), whose sum is σ = 4015648. Its totient is φ = 1588464.

The previous prime is 2581367. The next prime is 2581373. The reversal of 2581371 is 1731852.

It is not a de Polignac number, because 2581371 - 2² = 2581367 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2581373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10915 + ... + 11148.

2^2581371 is an apocalyptic number.

2581371 is a deficient number, since it is larger than the sum of its proper divisors (1434277).

2581371 is a wasteful number, since it uses less digits than its factorization.

2581371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22082 (or 22079 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 2581371 is about 1606.6645573983. The cubic root of 2581371 is about 137.1776869312.

The spelling of 2581371 in words is "two million, five hundred eighty-one thousand, three hundred seventy-one".