5671881 has 24 divisors (see below), whose sum is σ = 8484840. Its totient is φ = 3649536.

The previous prime is 5671877. The next prime is 5671921. The reversal of 5671881 is 1881765.

5671881 is a `hidden beast` number, since 567 + 18 + 81 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 308025 + 5363856 = 555^2 + 2316^2 .

It is not a de Polignac number, because 5671881 - 2² = 5671877 is a prime.

It is a super-2 number, since 2×5671881² = 64340468156322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5671801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58425 + ... + 58521.

It is an arithmetic number, because the mean of its divisors is an integer number (353535).

Almost surely, 2^5671881 is an apocalyptic number.

It is an amenable number.

5671881 is a deficient number, since it is larger than the sum of its proper divisors (2812959).

5671881 is a wasteful number, since it uses less digits than its factorization.

5671881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 262 counting only the distinct ones).

The product of its digits is 13440, while the sum is 36.

The square root of 5671881 is about 2381.5711200802. The cubic root of 5671881 is about 178.3373751280.

The spelling of 5671881 in words is "five million, six hundred seventy-one thousand, eight hundred eighty-one".