520622452 has 36 divisors (see below), whose sum is σ = 1065464064. Its totient is φ = 221939760.

The previous prime is 520622447. The next prime is 520622497. The reversal of 520622452 is 254226025.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 520622452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30483 + ... + 44389.

It is an arithmetic number, because the mean of its divisors is an integer number (29596224).

Almost surely, 2^520622452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520622452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (532732032).

520622452 is an abundant number, since it is smaller than the sum of its proper divisors (544841612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520622452 is a wasteful number, since it uses less digits than its factorization.

520622452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14116 (or 14107 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 520622452 is about 22817.1525830898. The cubic root of 520622452 is about 804.4658838785.

Adding to 520622452 its reverse (254226025), we get a palindrome (774848477).

The spelling of 520622452 in words is "five hundred twenty million, six hundred twenty-two thousand, four hundred fifty-two".