520955980 has 48 divisors (see below), whose sum is σ = 1152978624. Its totient is φ = 197331200.

The previous prime is 520955977. The next prime is 520955983. The reversal of 520955980 is 89559025.

It is an interprime number because it is at equal distance from previous prime (520955977) and next prime (520955983).

It is not an unprimeable number, because it can be changed into a prime (520955983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40854 + ... + 52066.

It is an arithmetic number, because the mean of its divisors is an integer number (24020388).

Almost surely, 2^520955980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520955980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (576489312).

520955980 is an abundant number, since it is smaller than the sum of its proper divisors (632022644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520955980 is a wasteful number, since it uses less digits than its factorization.

520955980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11346 (or 11344 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 43.

The square root of 520955980 is about 22824.4601250501. The cubic root of 520955980 is about 804.6376363773.

The spelling of 520955980 in words is "five hundred twenty million, nine hundred fifty-five thousand, nine hundred eighty".