4491155 has 4 divisors (see below), whose sum is σ = 5389392. Its totient is φ = 3592920.

The previous prime is 4491133. The next prime is 4491161. The reversal of 4491155 is 5511944.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4491155 - 2¹⁰ = 4490131 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449111 + ... + 449120.

It is an arithmetic number, because the mean of its divisors is an integer number (1347348).

Almost surely, 2^4491155 is an apocalyptic number.

4491155 is a deficient number, since it is larger than the sum of its proper divisors (898237).

4491155 is an equidigital number, since it uses as much as digits as its factorization.

4491155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898236.

The product of its digits is 3600, while the sum is 29.

The square root of 4491155 is about 2119.2345316175. The cubic root of 4491155 is about 164.9881228059.

The spelling of 4491155 in words is "four million, four hundred ninety-one thousand, one hundred fifty-five".