2272081 has 12 divisors (see below), whose sum is σ = 2677860. Its totient is φ = 1921920.

The previous prime is 2272079. The next prime is 2272087. The reversal of 2272081 is 1802722.

It can be written as a sum of positive squares in 2 ways, for example, as 540225 + 1731856 = 735^2 + 1316^2 .

It is not a de Polignac number, because 2272081 - 2¹ = 2272079 is a prime.

It is a super-2 number, since 2×2272081² = 10324704141122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2272087) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4101 + ... + 4621.

It is an arithmetic number, because the mean of its divisors is an integer number (223155).

2^2272081 is an apocalyptic number.

It is an amenable number.

2272081 is a deficient number, since it is larger than the sum of its proper divisors (405779).

2272081 is an equidigital number, since it uses as much as digits as its factorization.

2272081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 617 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 2272081 is about 1507.3423632340. The cubic root of 2272081 is about 131.4643312879.

It can be divided in two parts, 22720 and 81, that added together give a square (22801 = 151²).

The spelling of 2272081 in words is "two million, two hundred seventy-two thousand, eighty-one".