2771245747 has 2 divisors, whose sum is σ = 2771245748. Its totient is φ = 2771245746.

The previous prime is 2771245739. The next prime is 2771245823. The reversal of 2771245747 is 7475421772.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2771245747 - 2³ = 2771245739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2771245697 and 2771245706.

It is not a weakly prime, because it can be changed into another prime (2771245717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1385622873 + 1385622874.

It is an arithmetic number, because the mean of its divisors is an integer number (1385622874).

Almost surely, 2^2771245747 is an apocalyptic number.

2771245747 is a deficient number, since it is larger than the sum of its proper divisors (1).

2771245747 is an equidigital number, since it uses as much as digits as its factorization.

2771245747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768320, while the sum is 46.

The square root of 2771245747 is about 52642.6229114773. The cubic root of 2771245747 is about 1404.6183783900.

The spelling of 2771245747 in words is "two billion, seven hundred seventy-one million, two hundred forty-five thousand, seven hundred forty-seven".