259651543 has 2 divisors, whose sum is σ = 259651544. Its totient is φ = 259651542.

The previous prime is 259651517. The next prime is 259651571. The reversal of 259651543 is 345156952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 259651543 - 2²⁵ = 226097111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 259651496 and 259651505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259651043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129825771 + 129825772.

It is an arithmetic number, because the mean of its divisors is an integer number (129825772).

Almost surely, 2^259651543 is an apocalyptic number.

259651543 is a deficient number, since it is larger than the sum of its proper divisors (1).

259651543 is an equidigital number, since it uses as much as digits as its factorization.

259651543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162000, while the sum is 40.

The square root of 259651543 is about 16113.7066809595. The cubic root of 259651543 is about 637.9651705779.

The spelling of 259651543 in words is "two hundred fifty-nine million, six hundred fifty-one thousand, five hundred forty-three".