520522423 has 4 divisors (see below), whose sum is σ = 547918360. Its totient is φ = 493126488.

The previous prime is 520522393. The next prime is 520522427. The reversal of 520522423 is 324225025.

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 520522423 - 2⁵ = 520522391 is a prime.

It is a super-3 number, since 3×520522423³ (a number of 27 digits) contains 333 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 (520522427) 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, 13697940 + ... + 13697977.

It is an arithmetic number, because the mean of its divisors is an integer number (136979590).

Almost surely, 2^520522423 is an apocalyptic number.

520522423 is a deficient number, since it is larger than the sum of its proper divisors (27395937).

520522423 is a wasteful number, since it uses less digits than its factorization.

520522423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27395936.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 520522423 is about 22814.9605084033. The cubic root of 520522423 is about 804.4143589703.

Adding to 520522423 its reverse (324225025), we get a palindrome (844747448).

The spelling of 520522423 in words is "five hundred twenty million, five hundred twenty-two thousand, four hundred twenty-three".