5271989 has 4 divisors (see below), whose sum is σ = 5582124. Its totient is φ = 4961856.

The previous prime is 5271977. The next prime is 5272009. The reversal of 5271989 is 9891725.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3771364 + 1500625 = 1942^2 + 1225^2 .

It is a cyclic number.

It is not a de Polignac number, because 5271989 - 2⁸ = 5271733 is a prime.

It is a super-2 number, since 2×5271989² = 55587736032242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5271919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155042 + ... + 155075.

It is an arithmetic number, because the mean of its divisors is an integer number (1395531).

Almost surely, 2^5271989 is an apocalyptic number.

It is an amenable number.

5271989 is a deficient number, since it is larger than the sum of its proper divisors (310135).

5271989 is a wasteful number, since it uses less digits than its factorization.

5271989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310134.

The product of its digits is 45360, while the sum is 41.

The square root of 5271989 is about 2296.0812267862. The cubic root of 5271989 is about 174.0436429918.

The spelling of 5271989 in words is "five million, two hundred seventy-one thousand, nine hundred eighty-nine".