4591881 has 24 divisors (see below), whose sum is σ = 7912320. Its totient is φ = 2509056.

The previous prime is 4591871. The next prime is 4591891. The reversal of 4591881 is 1881954.

It is an interprime number because it is at equal distance from previous prime (4591871) and next prime (4591891).

It is not a de Polignac number, because 4591881 - 2⁶ = 4591817 is a prime.

It is a super-2 number, since 2×4591881² = 42170742236322, which contains 22 as substring.

4591881 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4591801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136 + ... + 3033.

It is an arithmetic number, because the mean of its divisors is an integer number (329680).

Almost surely, 2^4591881 is an apocalyptic number.

It is an amenable number.

4591881 is a deficient number, since it is larger than the sum of its proper divisors (3320439).

4591881 is a wasteful number, since it uses less digits than its factorization.

4591881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3205 (or 3202 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 4591881 is about 2142.8674714037. The cubic root of 4591881 is about 166.2124463390.

The spelling of 4591881 in words is "four million, five hundred ninety-one thousand, eight hundred eighty-one".