133216522 has 16 divisors (see below), whose sum is σ = 212663880. Its totient is φ = 62368768.

The previous prime is 133216511. The next prime is 133216549. The reversal of 133216522 is 225612331.

It can be written as a sum of positive squares in 4 ways, for example, as 117700801 + 15515721 = 10849^2 + 3939^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3247 + ... + 16642.

Almost surely, 2^133216522 is an apocalyptic number.

133216522 is a deficient number, since it is larger than the sum of its proper divisors (79447358).

133216522 is a wasteful number, since it uses less digits than its factorization.

133216522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20105.

The product of its digits is 2160, while the sum is 25.

The square root of 133216522 is about 11541.9461963743. The cubic root of 133216522 is about 510.7237219627.

Adding to 133216522 its reverse (225612331), we get a palindrome (358828853).

The spelling of 133216522 in words is "one hundred thirty-three million, two hundred sixteen thousand, five hundred twenty-two".