4721881 has 4 divisors (see below), whose sum is σ = 4730832. Its totient is φ = 4712932.

The previous prime is 4721879. The next prime is 4721887. The reversal of 4721881 is 1881274.

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 4721881 - 2¹ = 4721879 is a prime.

It is a super-2 number, since 2×4721881² = 44592320356322, which contains 22 as substring.

It is a Duffinian number.

4721881 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4721887) 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, 3631 + ... + 4756.

It is an arithmetic number, because the mean of its divisors is an integer number (1182708).

Almost surely, 2^4721881 is an apocalyptic number.

It is an amenable number.

4721881 is a deficient number, since it is larger than the sum of its proper divisors (8951).

4721881 is an equidigital number, since it uses as much as digits as its factorization.

4721881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8950.

The product of its digits is 3584, while the sum is 31.

The square root of 4721881 is about 2172.9889553332. The cubic root of 4721881 is about 167.7664105309.

The spelling of 4721881 in words is "four million, seven hundred twenty-one thousand, eight hundred eighty-one".