4855581 has 6 divisors (see below), whose sum is σ = 7013630. Its totient is φ = 3237048.

The previous prime is 4855579. The next prime is 4855597. The reversal of 4855581 is 1855584.

It can be written as a sum of positive squares in only one way, i.e., 4691556 + 164025 = 2166^2 + 405^2 .

It is not a de Polignac number, because 4855581 - 2¹ = 4855579 is a prime.

It is a super-2 number, since 2×4855581² = 47153333695122, which contains 22 as substring.

It is a Duffinian number.

4855581 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4855511) 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 5 ways as a sum of consecutive naturals, for example, 269746 + ... + 269763.

Almost surely, 2^4855581 is an apocalyptic number.

It is an amenable number.

4855581 is a deficient number, since it is larger than the sum of its proper divisors (2158049).

4855581 is a wasteful number, since it uses less digits than its factorization.

4855581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539515 (or 539512 counting only the distinct ones).

The product of its digits is 32000, while the sum is 36.

The square root of 4855581 is about 2203.5382910220. The cubic root of 4855581 is about 169.3351308873.

The spelling of 4855581 in words is "four million, eight hundred fifty-five thousand, five hundred eighty-one".