523245493 has 4 divisors (see below), whose sum is σ = 523298380. Its totient is φ = 523192608.

The previous prime is 523245487. The next prime is 523245509. The reversal of 523245493 is 394542325.

It is the 9339-th star number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 415874449 + 107371044 = 20393^2 + 10362^2 .

It is a cyclic number.

It is not a de Polignac number, because 523245493 - 2²⁵ = 489691061 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 (523245473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6678 + ... + 33031.

It is an arithmetic number, because the mean of its divisors is an integer number (130824595).

Almost surely, 2^523245493 is an apocalyptic number.

It is an amenable number.

523245493 is a deficient number, since it is larger than the sum of its proper divisors (52887).

523245493 is a wasteful number, since it uses less digits than its factorization.

523245493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52886.

The product of its digits is 129600, while the sum is 37.

The square root of 523245493 is about 22874.5599520515. The cubic root of 523245493 is about 805.8146623381.

It can be divided in two parts, 523 and 245493, that added together give a square (246016 = 496²).

The spelling of 523245493 in words is "five hundred twenty-three million, two hundred forty-five thousand, four hundred ninety-three".