259561001 has 8 divisors (see below), whose sum is σ = 301669440. Its totient is φ = 218709648.

The previous prime is 259560971. The next prime is 259561007. The reversal of 259561001 is 100165952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 259561001 - 2¹⁸ = 259298857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (259561007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313826 + ... + 314651.

It is an arithmetic number, because the mean of its divisors is an integer number (37708680).

Almost surely, 2^259561001 is an apocalyptic number.

It is an amenable number.

259561001 is a deficient number, since it is larger than the sum of its proper divisors (42108439).

259561001 is an equidigital number, since it uses as much as digits as its factorization.

259561001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628543.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 259561001 is about 16110.8969644772. The cubic root of 259561001 is about 637.8910079044.

The spelling of 259561001 in words is "two hundred fifty-nine million, five hundred sixty-one thousand, one".