520423301 has 4 divisors (see below), whose sum is σ = 521010912. Its totient is φ = 519835692.

The previous prime is 520423279. The next prime is 520423349. The reversal of 520423301 is 103324025.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 520423301 - 2¹⁰ = 520422277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520426301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292475 + ... + 294248.

It is an arithmetic number, because the mean of its divisors is an integer number (130252728).

Almost surely, 2^520423301 is an apocalyptic number.

It is an amenable number.

520423301 is a deficient number, since it is larger than the sum of its proper divisors (587611).

520423301 is an equidigital number, since it uses as much as digits as its factorization.

520423301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587610.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 520423301 is about 22812.7881022903. The cubic root of 520423301 is about 804.3632947456.

Adding to 520423301 its reverse (103324025), we get a palindrome (623747326).

The spelling of 520423301 in words is "five hundred twenty million, four hundred twenty-three thousand, three hundred one".