520213055 has 4 divisors (see below), whose sum is σ = 624255672. Its totient is φ = 416170440.

The previous prime is 520213051. The next prime is 520213079. The reversal of 520213055 is 550312025.

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

It is not a de Polignac number, because 520213055 - 2² = 520213051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 520213055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520213051) 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, 52021301 + ... + 52021310.

It is an arithmetic number, because the mean of its divisors is an integer number (156063918).

Almost surely, 2^520213055 is an apocalyptic number.

520213055 is a deficient number, since it is larger than the sum of its proper divisors (104042617).

520213055 is a wasteful number, since it uses less digits than its factorization.

520213055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104042616.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 520213055 is about 22808.1795634812. The cubic root of 520213055 is about 804.2549618151.

The spelling of 520213055 in words is "five hundred twenty million, two hundred thirteen thousand, fifty-five".