2271553 has 2 divisors, whose sum is σ = 2271554. Its totient is φ = 2271552.

The previous prime is 2271551. The next prime is 2271569. The reversal of 2271553 is 3551722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2259009 + 12544 = 1503^2 + 112^2 .

It is a cyclic number.

It is not a de Polignac number, because 2271553 - 2¹ = 2271551 is a prime.

Together with 2271551, it forms a pair of twin primes.

2271553 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2271551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1135776 + 1135777.

It is an arithmetic number, because the mean of its divisors is an integer number (1135777).

2^2271553 is an apocalyptic number.

It is an amenable number.

2271553 is a deficient number, since it is larger than the sum of its proper divisors (1).

2271553 is an equidigital number, since it uses as much as digits as its factorization.

2271553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2100, while the sum is 25.

The square root of 2271553 is about 1507.1672103652. The cubic root of 2271553 is about 131.4541470054.

The spelling of 2271553 in words is "two million, two hundred seventy-one thousand, five hundred fifty-three".