5447581 has 2 divisors, whose sum is σ = 5447582. Its totient is φ = 5447580.

The previous prime is 5447579. The next prime is 5447587. The reversal of 5447581 is 1857445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5447556 + 25 = 2334^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 5447581 - 2¹ = 5447579 is a prime.

It is a super-2 number, since 2×5447581² = 59352277503122, which contains 22 as substring.

Together with 5447579, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5447587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2723790 + 2723791.

It is an arithmetic number, because the mean of its divisors is an integer number (2723791).

Almost surely, 2^5447581 is an apocalyptic number.

It is an amenable number.

5447581 is a deficient number, since it is larger than the sum of its proper divisors (1).

5447581 is an equidigital number, since it uses as much as digits as its factorization.

5447581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22400, while the sum is 34.

The square root of 5447581 is about 2334.0053556065. The cubic root of 5447581 is about 175.9548459405.

The spelling of 5447581 in words is "five million, four hundred forty-seven thousand, five hundred eighty-one".