1730275221 has 4 divisors (see below), whose sum is σ = 2307033632. Its totient is φ = 1153516812.

The previous prime is 1730275189. The next prime is 1730275229. The reversal of 1730275221 is 1225720371.

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 not a de Polignac number, because 1730275221 - 2⁵ = 1730275189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1730275229) 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, 288379201 + ... + 288379206.

It is an arithmetic number, because the mean of its divisors is an integer number (576758408).

Almost surely, 2^1730275221 is an apocalyptic number.

It is an amenable number.

1730275221 is a deficient number, since it is larger than the sum of its proper divisors (576758411).

1730275221 is an equidigital number, since it uses as much as digits as its factorization.

1730275221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576758410.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 1730275221 is about 41596.5770346551. The cubic root of 1730275221 is about 1200.5264405443.

Adding to 1730275221 its reverse (1225720371), we get a palindrome (2955995592).

The spelling of 1730275221 in words is "one billion, seven hundred thirty million, two hundred seventy-five thousand, two hundred twenty-one".