2272146281 has 4 divisors (see below), whose sum is σ = 2272634112. Its totient is φ = 2271658452.

The previous prime is 2272146263. The next prime is 2272146301. The reversal of 2272146281 is 1826412722.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2272146281 is a prime.

It is a super-2 number, since 2×2272146281² = 10325297444524261922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2272146211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236861 + ... + 246266.

It is an arithmetic number, because the mean of its divisors is an integer number (568158528).

Almost surely, 2^2272146281 is an apocalyptic number.

It is an amenable number.

2272146281 is a deficient number, since it is larger than the sum of its proper divisors (487831).

2272146281 is an equidigital number, since it uses as much as digits as its factorization.

2272146281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487830.

The product of its digits is 21504, while the sum is 35.

The square root of 2272146281 is about 47667.0355801575. The cubic root of 2272146281 is about 1314.6559034525.

The spelling of 2272146281 in words is "two billion, two hundred seventy-two million, one hundred forty-six thousand, two hundred eighty-one".