4220581 has 8 divisors (see below), whose sum is σ = 4350528. Its totient is φ = 4092000.

The previous prime is 4220563. The next prime is 4220597. The reversal of 4220581 is 1850224.

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 4220581 - 2¹⁷ = 4089509 is a prime.

It is a super-2 number, since 2×4220581² = 35626607955122, 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 (4220521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12586 + ... + 12916.

It is an arithmetic number, because the mean of its divisors is an integer number (543816).

Almost surely, 2^4220581 is an apocalyptic number.

4220581 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4220581 is a deficient number, since it is larger than the sum of its proper divisors (129947).

4220581 is a wasteful number, since it uses less digits than its factorization.

4220581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 4220581 is about 2054.4052667378. The cubic root of 4220581 is about 161.6059747856.

The spelling of 4220581 in words is "four million, two hundred twenty thousand, five hundred eighty-one".