2277281 has 4 divisors (see below), whose sum is σ = 2298672. Its totient is φ = 2255892.

The previous prime is 2277259. The next prime is 2277287. The reversal of 2277281 is 1827722.

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-2277281 is a prime.

It is a super-2 number, since 2×2277281² = 10372017505922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2277287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10535 + ... + 10748.

It is an arithmetic number, because the mean of its divisors is an integer number (574668).

2^2277281 is an apocalyptic number.

It is an amenable number.

2277281 is a deficient number, since it is larger than the sum of its proper divisors (21391).

2277281 is a wasteful number, since it uses less digits than its factorization.

2277281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21390.

The product of its digits is 3136, while the sum is 29.

The square root of 2277281 is about 1509.0662675973. The cubic root of 2277281 is about 131.5645468563.

The spelling of 2277281 in words is "two million, two hundred seventy-seven thousand, two hundred eighty-one".