213504522 has 32 divisors (see below), whose sum is σ = 532376064. Its totient is φ = 55455600.

The previous prime is 213504509. The next prime is 213504553. The reversal of 213504522 is 225405312.

It is a junction number, because it is equal to n+sod(n) for n = 213504492 and 213504501.

It is an unprimeable number.

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, 230604 + ... + 231527.

It is an arithmetic number, because the mean of its divisors is an integer number (16636752).

Almost surely, 2^213504522 is an apocalyptic number.

213504522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

213504522 is an abundant number, since it is smaller than the sum of its proper divisors (318871542).

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

213504522 is a wasteful number, since it uses less digits than its factorization.

213504522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462154.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 213504522 is about 14611.7939350375. The cubic root of 213504522 is about 597.6804163309.

Adding to 213504522 its reverse (225405312), we get a palindrome (438909834).

The spelling of 213504522 in words is "two hundred thirteen million, five hundred four thousand, five hundred twenty-two".