220522513 has 4 divisors (see below), whose sum is σ = 220552228. Its totient is φ = 220492800.

The previous prime is 220522507. The next prime is 220522529. The reversal of 220522513 is 315225022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 109683729 + 110838784 = 10473^2 + 10528^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220522513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220522573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6745 + ... + 22057.

It is an arithmetic number, because the mean of its divisors is an integer number (55138057).

Almost surely, 2^220522513 is an apocalyptic number.

It is an amenable number.

220522513 is a deficient number, since it is larger than the sum of its proper divisors (29715).

220522513 is a wasteful number, since it uses less digits than its factorization.

220522513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29714.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 220522513 is about 14850.0004377104. Note that the first 3 decimals coincide. The cubic root of 220522513 is about 604.1586218847.

Adding to 220522513 its reverse (315225022), we get a palindrome (535747535).

The spelling of 220522513 in words is "two hundred twenty million, five hundred twenty-two thousand, five hundred thirteen".