2271611497 has 2 divisors, whose sum is σ = 2271611498. Its totient is φ = 2271611496.

The previous prime is 2271611477. The next prime is 2271611501. The reversal of 2271611497 is 7941161722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1432698201 + 838913296 = 37851^2 + 28964^2 .

It is a cyclic number.

It is not a de Polignac number, because 2271611497 - 2⁷ = 2271611369 is a prime.

It is not a weakly prime, because it can be changed into another prime (2271611477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1135805748 + 1135805749.

It is an arithmetic number, because the mean of its divisors is an integer number (1135805749).

Almost surely, 2^2271611497 is an apocalyptic number.

It is an amenable number.

2271611497 is a deficient number, since it is larger than the sum of its proper divisors (1).

2271611497 is an equidigital number, since it uses as much as digits as its factorization.

2271611497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 40.

The square root of 2271611497 is about 47661.4256710812. The cubic root of 2271611497 is about 1314.5527539746.

The spelling of 2271611497 in words is "two billion, two hundred seventy-one million, six hundred eleven thousand, four hundred ninety-seven".