520850881 has 4 divisors (see below), whose sum is σ = 521285764. Its totient is φ = 520416000.

The previous prime is 520850867. The next prime is 520850917. The reversal of 520850881 is 188058025.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17297281 + 503553600 = 4159^2 + 22440^2 .

It is a cyclic number.

It is not a de Polignac number, because 520850881 - 2¹³ = 520842689 is a prime.

It is a super-2 number, since 2×520850881² = 542571280476952322, which contains 22 as substring.

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 520850881.

It is not an unprimeable number, because it can be changed into a prime (520850821) 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, 215640 + ... + 218041.

It is an arithmetic number, because the mean of its divisors is an integer number (130321441).

Almost surely, 2^520850881 is an apocalyptic number.

It is an amenable number.

520850881 is a deficient number, since it is larger than the sum of its proper divisors (434883).

520850881 is a wasteful number, since it uses less digits than its factorization.

520850881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434882.

The product of its (nonzero) digits is 25600, while the sum is 37.

The square root of 520850881 is about 22822.1576762584. The cubic root of 520850881 is about 804.5835228490.

It can be divided in two parts, 52085088 and 1, that added together give a square (52085089 = 7217²).

The spelling of 520850881 in words is "five hundred twenty million, eight hundred fifty thousand, eight hundred eighty-one".