4581881 has 4 divisors (see below), whose sum is σ = 4659600. Its totient is φ = 4504164.

The previous prime is 4581859. The next prime is 4581911. The reversal of 4581881 is 1881854.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4581881 - 2⁶ = 4581817 is a prime.

It is a super-2 number, since 2×4581881² = 41987266996322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4581281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38771 + ... + 38888.

It is an arithmetic number, because the mean of its divisors is an integer number (1164900).

Almost surely, 2^4581881 is an apocalyptic number.

It is an amenable number.

4581881 is a deficient number, since it is larger than the sum of its proper divisors (77719).

4581881 is an equidigital number, since it uses as much as digits as its factorization.

4581881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77718.

The product of its digits is 10240, while the sum is 35.

The square root of 4581881 is about 2140.5328775798. The cubic root of 4581881 is about 166.0917018850.

The spelling of 4581881 in words is "four million, five hundred eighty-one thousand, eight hundred eighty-one".