4905581 has 8 divisors (see below), whose sum is σ = 5014464. Its totient is φ = 4798080.

The previous prime is 4905577. The next prime is 4905587. The reversal of 4905581 is 1855094.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4905581 - 2² = 4905577 is a prime.

It is a super-2 number, since 2×4905581² = 48129449895122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4905587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9746 + ... + 10236.

It is an arithmetic number, because the mean of its divisors is an integer number (626808).

Almost surely, 2^4905581 is an apocalyptic number.

It is an amenable number.

4905581 is a deficient number, since it is larger than the sum of its proper divisors (108883).

4905581 is a wasteful number, since it uses less digits than its factorization.

4905581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 4905581 is about 2214.8546227687. The cubic root of 4905581 is about 169.9143859567.

The spelling of 4905581 in words is "four million, nine hundred five thousand, five hundred eighty-one".