2791057397 has 2 divisors, whose sum is σ = 2791057398. Its totient is φ = 2791057396.

The previous prime is 2791057393. The next prime is 2791057427. The reversal of 2791057397 is 7937501972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2432561041 + 358496356 = 49321^2 + 18934^2 .

It is a cyclic number.

It is not a de Polignac number, because 2791057397 - 2² = 2791057393 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2791057393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1395528698 + 1395528699.

It is an arithmetic number, because the mean of its divisors is an integer number (1395528699).

Almost surely, 2^2791057397 is an apocalyptic number.

It is an amenable number.

2791057397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2791057397 is an equidigital number, since it uses as much as digits as its factorization.

2791057397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 833490, while the sum is 50.

The square root of 2791057397 is about 52830.4589891097. The cubic root of 2791057397 is about 1407.9576415042.

The spelling of 2791057397 in words is "two billion, seven hundred ninety-one million, fifty-seven thousand, three hundred ninety-seven".