5571881 has 4 divisors (see below), whose sum is σ = 6367872. Its totient is φ = 4775892.

The previous prime is 5571851. The next prime is 5571887. The reversal of 5571881 is 1881755.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1881755 = 5 ⋅376351.

It is a cyclic number.

It is not a de Polignac number, because 5571881 - 2¹⁴ = 5555497 is a prime.

It is a super-2 number, since 2×5571881² = 62091715756322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5571887) 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, 397985 + ... + 397998.

It is an arithmetic number, because the mean of its divisors is an integer number (1591968).

Almost surely, 2^5571881 is an apocalyptic number.

It is an amenable number.

5571881 is a deficient number, since it is larger than the sum of its proper divisors (795991).

5571881 is an equidigital number, since it uses as much as digits as its factorization.

5571881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795990.

The product of its digits is 11200, while the sum is 35.

The square root of 5571881 is about 2360.4832132426. The cubic root of 5571881 is about 177.2830756097.

The spelling of 5571881 in words is "five million, five hundred seventy-one thousand, eight hundred eighty-one".