5045581 has 2 divisors, whose sum is σ = 5045582. Its totient is φ = 5045580.

The previous prime is 5045567. The next prime is 5045609. The reversal of 5045581 is 1855405.

It is an a-pointer prime, because the next prime (5045609) can be obtained adding 5045581 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4691556 + 354025 = 2166^2 + 595^2 .

It is a cyclic number.

It is not a de Polignac number, because 5045581 - 2¹⁷ = 4914509 is a prime.

It is a super-2 number, since 2×5045581² = 50915775255122, which contains 22 as substring.

5045581 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5045531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2522790 + 2522791.

It is an arithmetic number, because the mean of its divisors is an integer number (2522791).

Almost surely, 2^5045581 is an apocalyptic number.

It is an amenable number.

5045581 is a deficient number, since it is larger than the sum of its proper divisors (1).

5045581 is an equidigital number, since it uses as much as digits as its factorization.

5045581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 5045581 is about 2246.2370756445. The cubic root of 5045581 is about 171.5156397323.

The spelling of 5045581 in words is "five million, forty-five thousand, five hundred eighty-one".