2471871 has 12 divisors (see below), whose sum is σ = 3376472. Its totient is φ = 1608528.

The previous prime is 2471869. The next prime is 2471899. The reversal of 2471871 is 1781742.

It is not a de Polignac number, because 2471871 - 2¹ = 2471869 is a prime.

It is a super-2 number, since 2×2471871² = 12220292481282, which contains 22 as substring.

It is a Duffinian number.

2471871 is a lucky number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2471071) 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, 6441 + ... + 6813.

2^2471871 is an apocalyptic number.

2471871 is a deficient number, since it is larger than the sum of its proper divisors (904601).

2471871 is an equidigital number, since it uses as much as digits as its factorization.

2471871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 423 counting only the distinct ones).

The product of its digits is 3136, while the sum is 30.

The square root of 2471871 is about 1572.2184962657. The cubic root of 2471871 is about 135.2099340004.

The spelling of 2471871 in words is "two million, four hundred seventy-one thousand, eight hundred seventy-one".