520622243 has 4 divisors (see below), whose sum is σ = 531699360. Its totient is φ = 509545128.

The previous prime is 520622213. The next prime is 520622269. The reversal of 520622243 is 342226025.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520622243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520622213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5538488 + ... + 5538581.

It is an arithmetic number, because the mean of its divisors is an integer number (132924840).

Almost surely, 2^520622243 is an apocalyptic number.

520622243 is a deficient number, since it is larger than the sum of its proper divisors (11077117).

520622243 is a wasteful number, since it uses less digits than its factorization.

520622243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11077116.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 520622243 is about 22817.1480032015. The cubic root of 520622243 is about 804.4657762295.

Adding to 520622243 its reverse (342226025), we get a palindrome (862848268).

The spelling of 520622243 in words is "five hundred twenty million, six hundred twenty-two thousand, two hundred forty-three".