4591161 has 10 divisors (see below), whose sum is σ = 6858522. Its totient is φ = 3060720.

The previous prime is 4591159. The next prime is 4591163. The reversal of 4591161 is 1611954.

It is an interprime number because it is at equal distance from previous prime (4591159) and next prime (4591163).

It can be written as a sum of positive squares in only one way, i.e., 3920400 + 670761 = 1980^2 + 819^2 .

It is not a de Polignac number, because 4591161 - 2¹ = 4591159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

4591161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4591163) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 28260 + ... + 28421.

Almost surely, 2^4591161 is an apocalyptic number.

It is an amenable number.

4591161 is a deficient number, since it is larger than the sum of its proper divisors (2267361).

4591161 is an equidigital number, since it uses as much as digits as its factorization.

4591161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56693 (or 56684 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 4591161 is about 2142.6994656274. The cubic root of 4591161 is about 166.2037585982.

The spelling of 4591161 in words is "four million, five hundred ninety-one thousand, one hundred sixty-one".