2540274857 has 2 divisors, whose sum is σ = 2540274858. Its totient is φ = 2540274856.

The previous prime is 2540274851. The next prime is 2540274871. The reversal of 2540274857 is 7584720452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1585712041 + 954562816 = 39821^2 + 30896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2540274857 is a prime.

It is not a weakly prime, because it can be changed into another prime (2540274851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270137428 + 1270137429.

It is an arithmetic number, because the mean of its divisors is an integer number (1270137429).

Almost surely, 2^2540274857 is an apocalyptic number.

It is an amenable number.

2540274857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540274857 is an equidigital number, since it uses as much as digits as its factorization.

2540274857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 627200, while the sum is 44.

The square root of 2540274857 is about 50401.1394414849. The cubic root of 2540274857 is about 1364.4582028644.

The spelling of 2540274857 in words is "two billion, five hundred forty million, two hundred seventy-four thousand, eight hundred fifty-seven".