2543086397 has 2 divisors, whose sum is σ = 2543086398. Its totient is φ = 2543086396.

The previous prime is 2543086367. The next prime is 2543086409. The reversal of 2543086397 is 7936803452.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2425168516 + 117917881 = 49246^2 + 10859^2 .

It is a cyclic number.

It is not a de Polignac number, because 2543086397 - 2¹⁰ = 2543085373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2543086367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271543198 + 1271543199.

It is an arithmetic number, because the mean of its divisors is an integer number (1271543199).

Almost surely, 2^2543086397 is an apocalyptic number.

It is an amenable number.

2543086397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543086397 is an equidigital number, since it uses as much as digits as its factorization.

2543086397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The square root of 2543086397 is about 50429.0233595694. The cubic root of 2543086397 is about 1364.9614048939.

The spelling of 2543086397 in words is "two billion, five hundred forty-three million, eighty-six thousand, three hundred ninety-seven".