245243321 has 4 divisors (see below), whose sum is σ = 250461312. Its totient is φ = 240025332.

The previous prime is 245243303. The next prime is 245243357. The reversal of 245243321 is 123342542.

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 245243321 - 2¹⁴ = 245226937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245243371) 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, 2608925 + ... + 2609018.

It is an arithmetic number, because the mean of its divisors is an integer number (62615328).

Almost surely, 2^245243321 is an apocalyptic number.

It is an amenable number.

245243321 is a deficient number, since it is larger than the sum of its proper divisors (5217991).

245243321 is an equidigital number, since it uses as much as digits as its factorization.

245243321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5217990.

The product of its digits is 5760, while the sum is 26.

The square root of 245243321 is about 15660.2465178553. The cubic root of 245243321 is about 625.9395541264.

Adding to 245243321 its reverse (123342542), we get a palindrome (368585863).

The spelling of 245243321 in words is "two hundred forty-five million, two hundred forty-three thousand, three hundred twenty-one".