2270181 has 4 divisors (see below), whose sum is σ = 3026912. Its totient is φ = 1513452.

The previous prime is 2270179. The next prime is 2270183. The reversal of 2270181 is 1810722.

2270181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (2270179) and next prime (2270183).

It is not a de Polignac number, because 2270181 - 2¹ = 2270179 is a prime.

It is a super-2 number, since 2×2270181² = 10307443545522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2270183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378361 + ... + 378366.

It is an arithmetic number, because the mean of its divisors is an integer number (756728).

2^2270181 is an apocalyptic number.

It is an amenable number.

2270181 is a deficient number, since it is larger than the sum of its proper divisors (756731).

2270181 is an equidigital number, since it uses as much as digits as its factorization.

2270181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756730.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 2270181 is about 1506.7119830943. The cubic root of 2270181 is about 131.4276759211.

The spelling of 2270181 in words is "two million, two hundred seventy thousand, one hundred eighty-one".