2271559481 has 2 divisors, whose sum is σ = 2271559482. Its totient is φ = 2271559480.

The previous prime is 2271559429. The next prime is 2271559501. The reversal of 2271559481 is 1849551722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1431487225 + 840072256 = 37835^2 + 28984^2 .

It is a cyclic number.

It is not a de Polignac number, because 2271559481 - 2³⁰ = 1197817657 is a prime.

It is a super-2 number, since 2×2271559481² = 10319964951441978722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2271559181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1135779740 + 1135779741.

It is an arithmetic number, because the mean of its divisors is an integer number (1135779741).

Almost surely, 2^2271559481 is an apocalyptic number.

It is an amenable number.

2271559481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2271559481 is an equidigital number, since it uses as much as digits as its factorization.

2271559481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 44.

The square root of 2271559481 is about 47660.8799855815. The cubic root of 2271559481 is about 1314.5427202316.

The spelling of 2271559481 in words is "two billion, two hundred seventy-one million, five hundred fifty-nine thousand, four hundred eighty-one".