520867881 has 32 divisors (see below), whose sum is σ = 817104000. Its totient is φ = 327011904.

The previous prime is 520867877. The next prime is 520867883. The reversal of 520867881 is 188768025.

It is not a de Polignac number, because 520867881 - 2² = 520867877 is a prime.

It is a super-2 number, since 2×520867881² = 542606698914860322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (520867883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85815 + ... + 91683.

It is an arithmetic number, because the mean of its divisors is an integer number (25534500).

Almost surely, 2^520867881 is an apocalyptic number.

It is an amenable number.

520867881 is a deficient number, since it is larger than the sum of its proper divisors (296236119).

520867881 is a wasteful number, since it uses less digits than its factorization.

520867881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6070 (or 6064 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The square root of 520867881 is about 22822.5301182844. The cubic root of 520867881 is about 804.5922763276.

The spelling of 520867881 in words is "five hundred twenty million, eight hundred sixty-seven thousand, eight hundred eighty-one".