2271612157 has 2 divisors, whose sum is σ = 2271612158. Its totient is φ = 2271612156.

The previous prime is 2271612113. The next prime is 2271612179. The reversal of 2271612157 is 7512161722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1566497241 + 705114916 = 39579^2 + 26554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2271612157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2271612757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1135806078 + 1135806079.

It is an arithmetic number, because the mean of its divisors is an integer number (1135806079).

Almost surely, 2^2271612157 is an apocalyptic number.

It is an amenable number.

2271612157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2271612157 is an equidigital number, since it uses as much as digits as its factorization.

2271612157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11760, while the sum is 34.

The square root of 2271612157 is about 47661.4325949189. The cubic root of 2271612157 is about 1314.5528812858.

Adding to 2271612157 its reverse (7512161722), we get a palindrome (9783773879).

The spelling of 2271612157 in words is "two billion, two hundred seventy-one million, six hundred twelve thousand, one hundred fifty-seven".