220528013 has 2 divisors, whose sum is σ = 220528014. Its totient is φ = 220528012.

The previous prime is 220528001. The next prime is 220528039. The reversal of 220528013 is 310825022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220284964 + 243049 = 14842^2 + 493^2 .

It is a cyclic number.

It is not a de Polignac number, because 220528013 - 2¹⁰ = 220526989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220528013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220528313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110264006 + 110264007.

It is an arithmetic number, because the mean of its divisors is an integer number (110264007).

Almost surely, 2^220528013 is an apocalyptic number.

It is an amenable number.

220528013 is a deficient number, since it is larger than the sum of its proper divisors (1).

220528013 is an equidigital number, since it uses as much as digits as its factorization.

220528013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 220528013 is about 14850.1856217355. The cubic root of 220528013 is about 604.1636445688.

The spelling of 220528013 in words is "two hundred twenty million, five hundred twenty-eight thousand, thirteen".