523105261 has 16 divisors (see below), whose sum is σ = 627130368. Its totient is φ = 426610800.

The previous prime is 523105241. The next prime is 523105267. The reversal of 523105261 is 162501325.

It is not a de Polignac number, because 523105261 - 2⁷ = 523105133 is a prime.

It is a super-2 number, since 2×523105261² = 547278228171756242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523105267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22246 + ... + 39256.

It is an arithmetic number, because the mean of its divisors is an integer number (39195648).

Almost surely, 2^523105261 is an apocalyptic number.

It is an amenable number.

523105261 is a deficient number, since it is larger than the sum of its proper divisors (104025107).

523105261 is a wasteful number, since it uses less digits than its factorization.

523105261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17232.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 523105261 is about 22871.4945073557. The cubic root of 523105261 is about 805.7426686629.

Adding to 523105261 its reverse (162501325), we get a palindrome (685606586).

The spelling of 523105261 in words is "five hundred twenty-three million, one hundred five thousand, two hundred sixty-one".