259640573 has 2 divisors, whose sum is σ = 259640574. Its totient is φ = 259640572.

The previous prime is 259640569. The next prime is 259640597. The reversal of 259640573 is 375046952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258502084 + 1138489 = 16078^2 + 1067^2 .

It is a cyclic number.

It is not a de Polignac number, because 259640573 - 2² = 259640569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 259640573.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259640543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129820286 + 129820287.

It is an arithmetic number, because the mean of its divisors is an integer number (129820287).

Almost surely, 2^259640573 is an apocalyptic number.

It is an amenable number.

259640573 is a deficient number, since it is larger than the sum of its proper divisors (1).

259640573 is an equidigital number, since it uses as much as digits as its factorization.

259640573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 41.

The square root of 259640573 is about 16113.3662839271. The cubic root of 259640573 is about 637.9561860027.

The spelling of 259640573 in words is "two hundred fifty-nine million, six hundred forty thousand, five hundred seventy-three".