5581871 has 2 divisors, whose sum is σ = 5581872. Its totient is φ = 5581870.

The previous prime is 5581853. The next prime is 5581897. The reversal of 5581871 is 1781855.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5581871 is a prime.

It is an Ulam number.

It is a plaindrome in base 9.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5581841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2790935 + 2790936.

It is an arithmetic number, because the mean of its divisors is an integer number (2790936).

Almost surely, 2^5581871 is an apocalyptic number.

5581871 is a deficient number, since it is larger than the sum of its proper divisors (1).

5581871 is an equidigital number, since it uses as much as digits as its factorization.

5581871 is an evil number, because the sum of its binary digits is even.

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

The square root of 5581871 is about 2362.5983577409. The cubic root of 5581871 is about 177.3889644778.

The spelling of 5581871 in words is "five million, five hundred eighty-one thousand, eight hundred seventy-one".