520530144055 has 4 divisors (see below), whose sum is σ = 624636172872. Its totient is φ = 416424115240.

The previous prime is 520530144053. The next prime is 520530144083. The reversal of 520530144055 is 550441035025.

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

It is not a de Polignac number, because 520530144055 - 2¹ = 520530144053 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 520530144055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520530144053) 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, 52053014401 + ... + 52053014410.

It is an arithmetic number, because the mean of its divisors is an integer number (156159043218).

Almost surely, 2^520530144055 is an apocalyptic number.

520530144055 is a deficient number, since it is larger than the sum of its proper divisors (104106028817).

520530144055 is a wasteful number, since it uses less digits than its factorization.

520530144055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104106028816.

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 520530144055 in words is "five hundred twenty billion, five hundred thirty million, one hundred forty-four thousand, fifty-five".