245322643 has 4 divisors (see below), whose sum is σ = 245754360. Its totient is φ = 244890928.

The previous prime is 245322641. The next prime is 245322653. The reversal of 245322643 is 346223542.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245322643 - 2¹ = 245322641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245322641) 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, 215005 + ... + 216142.

It is an arithmetic number, because the mean of its divisors is an integer number (61438590).

Almost surely, 2^245322643 is an apocalyptic number.

245322643 is a deficient number, since it is larger than the sum of its proper divisors (431717).

245322643 is an equidigital number, since it uses as much as digits as its factorization.

245322643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431716.

The product of its digits is 34560, while the sum is 31.

The square root of 245322643 is about 15662.7789041409. The cubic root of 245322643 is about 626.0070319073.

The spelling of 245322643 in words is "two hundred forty-five million, three hundred twenty-two thousand, six hundred forty-three".