5571989 has 2 divisors, whose sum is σ = 5571990. Its totient is φ = 5571988.

The previous prime is 5571977. The next prime is 5572001. The reversal of 5571989 is 9891755.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (5571977) and next prime (5572001).

It can be written as a sum of positive squares in only one way, i.e., 5484964 + 87025 = 2342^2 + 295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5571989 is a prime.

It is a super-2 number, since 2×5571989² = 62094122832242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5571919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2785994 + 2785995.

It is an arithmetic number, because the mean of its divisors is an integer number (2785995).

Almost surely, 2^5571989 is an apocalyptic number.

It is an amenable number.

5571989 is a deficient number, since it is larger than the sum of its proper divisors (1).

5571989 is an equidigital number, since it uses as much as digits as its factorization.

5571989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 44.

The square root of 5571989 is about 2360.5060898036. The cubic root of 5571989 is about 177.2842210307.

The spelling of 5571989 in words is "five million, five hundred seventy-one thousand, nine hundred eighty-nine".