220460521 has 4 divisors (see below), whose sum is σ = 224197200. Its totient is φ = 216723844.

The previous prime is 220460519. The next prime is 220460557. The reversal of 220460521 is 125064022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220460521 - 2¹ = 220460519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220460492 and 220460501.

It is not an unprimeable number, because it can be changed into a prime (220460501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1868251 + ... + 1868368.

It is an arithmetic number, because the mean of its divisors is an integer number (56049300).

Almost surely, 2^220460521 is an apocalyptic number.

It is an amenable number.

220460521 is a deficient number, since it is larger than the sum of its proper divisors (3736679).

220460521 is an equidigital number, since it uses as much as digits as its factorization.

220460521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3736678.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 220460521 is about 14847.9130183336. The cubic root of 220460521 is about 604.1020040654.

The spelling of 220460521 in words is "two hundred twenty million, four hundred sixty thousand, five hundred twenty-one".