2227261 has 2 divisors, whose sum is σ = 2227262. Its totient is φ = 2227260.

The previous prime is 2227259. The next prime is 2227273. The reversal of 2227261 is 1627222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1428025 + 799236 = 1195^2 + 894^2 .

It is a cyclic number.

It is not a de Polignac number, because 2227261 - 2¹ = 2227259 is a prime.

Together with 2227259, it forms a pair of twin primes.

2227261 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2227201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1113630 + 1113631.

It is an arithmetic number, because the mean of its divisors is an integer number (1113631).

2^2227261 is an apocalyptic number.

It is an amenable number.

2227261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2227261 is an equidigital number, since it uses as much as digits as its factorization.

2227261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 22.

The square root of 2227261 is about 1492.4010854995. The cubic root of 2227261 is about 130.5941443263.

The spelling of 2227261 in words is "two million, two hundred twenty-seven thousand, two hundred sixty-one".