520523211 has 12 divisors (see below), whose sum is σ = 751525368. Its totient is φ = 320321664.

The previous prime is 520523207. The next prime is 520523231. The reversal of 520523211 is 112325025.

It is not a de Polignac number, because 520523211 - 2² = 520523207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520523231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 512830 + ... + 513843.

It is an arithmetic number, because the mean of its divisors is an integer number (62627114).

Almost surely, 2^520523211 is an apocalyptic number.

520523211 is a deficient number, since it is larger than the sum of its proper divisors (231002157).

520523211 is a wasteful number, since it uses less digits than its factorization.

520523211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026702 (or 1026689 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 520523211 is about 22814.9777777670. The cubic root of 520523211 is about 804.4147648947.

Adding to 520523211 its reverse (112325025), we get a palindrome (632848236).

The spelling of 520523211 in words is "five hundred twenty million, five hundred twenty-three thousand, two hundred eleven".