259122661 has 8 divisors (see below), whose sum is σ = 296812224. Its totient is φ = 221601120.

The previous prime is 259122659. The next prime is 259122667. The reversal of 259122661 is 166221952.

It is a happy number.

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 259122661 - 2¹ = 259122659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259122667) 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, 38680 + ... + 44881.

It is an arithmetic number, because the mean of its divisors is an integer number (37101528).

Almost surely, 2^259122661 is an apocalyptic number.

It is an amenable number.

259122661 is a deficient number, since it is larger than the sum of its proper divisors (37689563).

259122661 is an equidigital number, since it uses as much as digits as its factorization.

259122661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84011.

The product of its digits is 12960, while the sum is 34.

The square root of 259122661 is about 16097.2873801768. The cubic root of 259122661 is about 637.5317208873.

It can be divided in two parts, 2591 and 22661, that added together give a palindrome (25252).

The spelling of 259122661 in words is "two hundred fifty-nine million, one hundred twenty-two thousand, six hundred sixty-one".