245315443 has 4 divisors (see below), whose sum is σ = 246043720. Its totient is φ = 244587168.

The previous prime is 245315407. The next prime is 245315453. The reversal of 245315443 is 344513542.

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 245315443 - 2²¹ = 243218291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245315453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363633 + ... + 364306.

It is an arithmetic number, because the mean of its divisors is an integer number (61510930).

Almost surely, 2^245315443 is an apocalyptic number.

245315443 is a deficient number, since it is larger than the sum of its proper divisors (728277).

245315443 is an equidigital number, since it uses as much as digits as its factorization.

245315443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728276.

The product of its digits is 28800, while the sum is 31.

The square root of 245315443 is about 15662.5490581833. The cubic root of 245315443 is about 626.0009075987. Note that the first 3 decimals are identical.

Adding to 245315443 its reverse (344513542), we get a palindrome (589828985).

The spelling of 245315443 in words is "two hundred forty-five million, three hundred fifteen thousand, four hundred forty-three".