4791121 has 4 divisors (see below), whose sum is σ = 4840612. Its totient is φ = 4741632.

The previous prime is 4791109. The next prime is 4791181. The reversal of 4791121 is 1211974.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1211974 = 2 ⋅605987.

It can be written as a sum of positive squares in 2 ways, for example, as 3101121 + 1690000 = 1761^2 + 1300^2 .

It is a cyclic number.

It is not a de Polignac number, because 4791121 - 2⁵ = 4791089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4791181) 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, 24600 + ... + 24793.

It is an arithmetic number, because the mean of its divisors is an integer number (1210153).

Almost surely, 2^4791121 is an apocalyptic number.

It is an amenable number.

4791121 is a deficient number, since it is larger than the sum of its proper divisors (49491).

4791121 is an equidigital number, since it uses as much as digits as its factorization.

4791121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49490.

The product of its digits is 504, while the sum is 25.

The square root of 4791121 is about 2188.8629468288. The cubic root of 4791121 is about 168.5824572134.

It can be divided in two parts, 479 and 1121, that added together give a square (1600 = 40²).

The spelling of 4791121 in words is "four million, seven hundred ninety-one thousand, one hundred twenty-one".