2227761 has 6 divisors (see below), whose sum is σ = 3217890. Its totient is φ = 1485168.

The previous prime is 2227747. The next prime is 2227763. The reversal of 2227761 is 1677222.

It can be written as a sum of positive squares in only one way, i.e., 2030625 + 197136 = 1425^2 + 444^2 .

It is not a de Polignac number, because 2227761 - 2¹⁵ = 2194993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2227763) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123756 + ... + 123773.

It is an arithmetic number, because the mean of its divisors is an integer number (536315).

2^2227761 is an apocalyptic number.

It is an amenable number.

2227761 is a deficient number, since it is larger than the sum of its proper divisors (990129).

2227761 is a wasteful number, since it uses less digits than its factorization.

2227761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247535 (or 247532 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 2227761 is about 1492.5685913887. The cubic root of 2227761 is about 130.6039159975.

The spelling of 2227761 in words is "two million, two hundred twenty-seven thousand, seven hundred sixty-one".