520406063 has 4 divisors (see below), whose sum is σ = 520487688. Its totient is φ = 520324440.

The previous prime is 520406053. The next prime is 520406077. The reversal of 520406063 is 360604025.

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 520406063 - 2¹² = 520401967 is a prime.

It is a super-5 number, since 5×520406063⁵ (a number of 45 digits) contains 55555 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 (520406053) 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, 30356 + ... + 44297.

It is an arithmetic number, because the mean of its divisors is an integer number (130121922).

Almost surely, 2^520406063 is an apocalyptic number.

520406063 is a deficient number, since it is larger than the sum of its proper divisors (81625).

520406063 is an equidigital number, since it uses as much as digits as its factorization.

520406063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81624.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 520406063 is about 22812.4102847551. The cubic root of 520406063 is about 804.3544136627.

The spelling of 520406063 in words is "five hundred twenty million, four hundred six thousand, sixty-three".