2543745487 has 2 divisors, whose sum is σ = 2543745488. Its totient is φ = 2543745486.

The previous prime is 2543745443. The next prime is 2543745497. The reversal of 2543745487 is 7845473452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2543745487 - 2³¹ = 396261839 is a prime.

It is a super-2 number, since 2×2543745487² = 12941282205265734338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2543745487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2543745437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271872743 + 1271872744.

It is an arithmetic number, because the mean of its divisors is an integer number (1271872744).

Almost surely, 2^2543745487 is an apocalyptic number.

2543745487 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543745487 is an equidigital number, since it uses as much as digits as its factorization.

2543745487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3763200, while the sum is 49.

The square root of 2543745487 is about 50435.5577643392. The cubic root of 2543745487 is about 1365.0793134197.

The spelling of 2543745487 in words is "two billion, five hundred forty-three million, seven hundred forty-five thousand, four hundred eighty-seven".