2547871 has 4 divisors (see below), whose sum is σ = 2658672. Its totient is φ = 2437072.

The previous prime is 2547847. The next prime is 2547887. The reversal of 2547871 is 1787452.

It is a happy number.

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 2547871 - 2¹⁵ = 2515103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2547821) 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, 55366 + ... + 55411.

It is an arithmetic number, because the mean of its divisors is an integer number (664668).

2^2547871 is an apocalyptic number.

2547871 is a deficient number, since it is larger than the sum of its proper divisors (110801).

2547871 is a wasteful number, since it uses less digits than its factorization.

2547871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110800.

The product of its digits is 15680, while the sum is 34.

The square root of 2547871 is about 1596.2051873115. The cubic root of 2547871 is about 136.5816888609.

The spelling of 2547871 in words is "two million, five hundred forty-seven thousand, eight hundred seventy-one".