523688261 has 8 divisors (see below), whose sum is σ = 531748224. Its totient is φ = 515647440.

The previous prime is 523688197. The next prime is 523688273. The reversal of 523688261 is 162886325.

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

It is not a de Polignac number, because 523688261 - 2⁶ = 523688197 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 (523688461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56240 + ... + 64886.

It is an arithmetic number, because the mean of its divisors is an integer number (66468528).

Almost surely, 2^523688261 is an apocalyptic number.

It is an amenable number.

523688261 is a deficient number, since it is larger than the sum of its proper divisors (8059963).

523688261 is an equidigital number, since it uses as much as digits as its factorization.

523688261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9571.

The product of its digits is 138240, while the sum is 41.

The square root of 523688261 is about 22884.2360807609. The cubic root of 523688261 is about 806.0418905134.

The spelling of 523688261 in words is "five hundred twenty-three million, six hundred eighty-eight thousand, two hundred sixty-one".