220549513 has 2 divisors, whose sum is σ = 220549514. Its totient is φ = 220549512.

The previous prime is 220549487. The next prime is 220549519. The reversal of 220549513 is 315945022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191905609 + 28643904 = 13853^2 + 5352^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220549513 is a prime.

It is not a weakly prime, because it can be changed into another prime (220549519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110274756 + 110274757.

It is an arithmetic number, because the mean of its divisors is an integer number (110274757).

Almost surely, 2^220549513 is an apocalyptic number.

It is an amenable number.

220549513 is a deficient number, since it is larger than the sum of its proper divisors (1).

220549513 is an equidigital number, since it uses as much as digits as its factorization.

220549513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 220549513 is about 14850.9095007680. The cubic root of 220549513 is about 604.1832778966.

The spelling of 220549513 in words is "two hundred twenty million, five hundred forty-nine thousand, five hundred thirteen".