5552581 has 2 divisors, whose sum is σ = 5552582. Its totient is φ = 5552580.

The previous prime is 5552539. The next prime is 5552593. The reversal of 5552581 is 1852555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3272481 + 2280100 = 1809^2 + 1510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5552581 is a prime.

It is a super-2 number, since 2×5552581² = 61662311523122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5552501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2776290 + 2776291.

It is an arithmetic number, because the mean of its divisors is an integer number (2776291).

Almost surely, 2^5552581 is an apocalyptic number.

It is an amenable number.

5552581 is a deficient number, since it is larger than the sum of its proper divisors (1).

5552581 is an equidigital number, since it uses as much as digits as its factorization.

5552581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10000, while the sum is 31.

The square root of 5552581 is about 2356.3915209489. The cubic root of 5552581 is about 177.0781465178.

It can be divided in two parts, 555 and 2581, that added together give a square (3136 = 56²).

The spelling of 5552581 in words is "five million, five hundred fifty-two thousand, five hundred eighty-one".