520220055 has 16 divisors (see below), whose sum is σ = 832728960. Its totient is φ = 277325088.

The previous prime is 520220039. The next prime is 520220081. The reversal of 520220055 is 550022025.

It is not a de Polignac number, because 520220055 - 2⁴ = 520220039 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33364 + ... + 46406.

It is an arithmetic number, because the mean of its divisors is an integer number (52045560).

Almost surely, 2^520220055 is an apocalyptic number.

520220055 is a deficient number, since it is larger than the sum of its proper divisors (312508905).

520220055 is a wasteful number, since it uses less digits than its factorization.

520220055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15710.

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 520220055 is about 22808.3330166849. Note that the first 3 decimals coincide. The cubic root of 520220055 is about 804.2585691573.

The spelling of 520220055 in words is "five hundred twenty million, two hundred twenty thousand, fifty-five".