523855523 has 4 divisors (see below), whose sum is σ = 524406168. Its totient is φ = 523304880.

The previous prime is 523855499. The next prime is 523855529. The reversal of 523855523 is 325558325.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 523855523 - 2²⁴ = 507078307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523855529) 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 3 ways as a sum of consecutive naturals, for example, 273893 + ... + 275798.

It is an arithmetic number, because the mean of its divisors is an integer number (131101542).

Almost surely, 2^523855523 is an apocalyptic number.

523855523 is a deficient number, since it is larger than the sum of its proper divisors (550645).

523855523 is an equidigital number, since it uses as much as digits as its factorization.

523855523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550644.

The product of its digits is 180000, while the sum is 38.

The square root of 523855523 is about 22887.8903134387. The cubic root of 523855523 is about 806.1276959043.

The spelling of 523855523 in words is "five hundred twenty-three million, eight hundred fifty-five thousand, five hundred twenty-three".