259909057 has 4 divisors (see below), whose sum is σ = 262482516. Its totient is φ = 257335600.

The previous prime is 259909031. The next prime is 259909063. The reversal of 259909057 is 750909952.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 208629136 + 51279921 = 14444^2 + 7161^2 .

It is a cyclic number.

It is not a de Polignac number, because 259909057 - 2¹¹ = 259907009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 259908998 and 259909016.

It is not an unprimeable number, because it can be changed into a prime (259909007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1286578 + ... + 1286779.

It is an arithmetic number, because the mean of its divisors is an integer number (65620629).

Almost surely, 2^259909057 is an apocalyptic number.

It is an amenable number.

259909057 is a deficient number, since it is larger than the sum of its proper divisors (2573459).

259909057 is a wasteful number, since it uses less digits than its factorization.

259909057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573458.

The product of its (nonzero) digits is 255150, while the sum is 46.

The square root of 259909057 is about 16121.6952272396. The cubic root of 259909057 is about 638.1760052991.

The spelling of 259909057 in words is "two hundred fifty-nine million, nine hundred nine thousand, fifty-seven".