5055581 has 2 divisors, whose sum is σ = 5055582.
Its totient is φ = 5055580.
The previous prime is 5055571. The next prime is 5055593. The reversal of 5055581 is 1855505.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 4305625 + 749956 = 2075^2 + 866^2
It is a cyclic number.
It is not a de Polignac number, because 5055581 - 214 = 5039197 is a prime.
It is a super-2 number, since 2×50555812 = 51117798495122, which contains 22 as substring.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (5055521) 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 as a sum of consecutive naturals, namely, 2527790 + 2527791.
It is an arithmetic number, because the mean of its divisors is an integer number (2527791).
Almost surely, 25055581 is an apocalyptic number.
It is an amenable number.
5055581 is a deficient number, since it is larger than the sum of its proper divisors (1).
5055581 is an equidigital number, since it uses as much as digits as its factorization.
5055581 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 5000, while the sum is 29.
The square root of 5055581 is about 2248.4619187347.
The cubic root of 5055581 is about 171.6288757524.
The spelling of 5055581 in words is "five million, fifty-five thousand, five hundred eighty-one".