520551223 has 4 divisors (see below), whose sum is σ = 520690248. Its totient is φ = 520412200.

The previous prime is 520551221. The next prime is 520551233. The reversal of 520551223 is 322155025.

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 520551223 - 2¹ = 520551221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520551221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63736 + ... + 71437.

It is an arithmetic number, because the mean of its divisors is an integer number (130172562).

Almost surely, 2^520551223 is an apocalyptic number.

520551223 is a deficient number, since it is larger than the sum of its proper divisors (139025).

520551223 is a wasteful number, since it uses less digits than its factorization.

520551223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139024.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 520551223 is about 22815.5916644737. The cubic root of 520551223 is about 804.4291945184.

The spelling of 520551223 in words is "five hundred twenty million, five hundred fifty-one thousand, two hundred twenty-three".