2261127797 has 2 divisors, whose sum is σ = 2261127798. Its totient is φ = 2261127796.

The previous prime is 2261127779. The next prime is 2261127811. The reversal of 2261127797 is 7977211622.

Together with previous prime (2261127779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1895209156 + 365918641 = 43534^2 + 19129^2 .

It is a cyclic number.

It is not a de Polignac number, because 2261127797 - 2²⁰ = 2260079221 is a prime.

It is a super-2 number, since 2×2261127797² = 10225397828732146418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2261127697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130563898 + 1130563899.

It is an arithmetic number, because the mean of its divisors is an integer number (1130563899).

Almost surely, 2^2261127797 is an apocalyptic number.

It is an amenable number.

2261127797 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261127797 is an equidigital number, since it uses as much as digits as its factorization.

2261127797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148176, while the sum is 44.

The square root of 2261127797 is about 47551.3175106642. The cubic root of 2261127797 is about 1312.5273736029.

The spelling of 2261127797 in words is "two billion, two hundred sixty-one million, one hundred twenty-seven thousand, seven hundred ninety-seven".