520855047 has 6 divisors (see below), whose sum is σ = 752346192. Its totient is φ = 347236692.

The previous prime is 520855043. The next prime is 520855121. The reversal of 520855047 is 740558025.

It is a happy number.

520855047 is a `hidden beast` number, since 520 + 85 + 50 + 4 + 7 = 666.

It is not a de Polignac number, because 520855047 - 2² = 520855043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520855043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28936383 + ... + 28936400.

It is an arithmetic number, because the mean of its divisors is an integer number (125391032).

Almost surely, 2^520855047 is an apocalyptic number.

520855047 is a deficient number, since it is larger than the sum of its proper divisors (231491145).

520855047 is a wasteful number, since it uses less digits than its factorization.

520855047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57872789 (or 57872786 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 520855047 is about 22822.2489470254. The cubic root of 520855047 is about 804.5856679838.

The spelling of 520855047 in words is "five hundred twenty million, eight hundred fifty-five thousand, forty-seven".