522418212 has 18 divisors (see below), whose sum is σ = 1320557238. Its totient is φ = 174139392.

The previous prime is 522418199. The next prime is 522418217. The reversal of 522418212 is 212814225.

It can be written as a sum of positive squares in only one way, i.e., 522305316 + 112896 = 22854^2 + 336^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (522418217) 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, 7255773 + ... + 7255844.

It is an arithmetic number, because the mean of its divisors is an integer number (73364291).

Almost surely, 2^522418212 is an apocalyptic number.

It is an amenable number.

522418212 is an abundant number, since it is smaller than the sum of its proper divisors (798139026).

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

522418212 is a wasteful number, since it uses less digits than its factorization.

522418212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14511627 (or 14511622 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 522418212 is about 22856.4698061621. The cubic root of 522418212 is about 805.3897586635.

It can be divided in two parts, 5224 and 18212, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 522418212 in words is "five hundred twenty-two million, four hundred eighteen thousand, two hundred twelve".