245324243 has 4 divisors (see below), whose sum is σ = 247495368. Its totient is φ = 243153120.

The previous prime is 245324239. The next prime is 245324251. The reversal of 245324243 is 342423542.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342423542 = 2 ⋅171211771.

It is a cyclic number.

It is not a de Polignac number, because 245324243 - 2² = 245324239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245324213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1085393 + ... + 1085618.

It is an arithmetic number, because the mean of its divisors is an integer number (61873842).

Almost surely, 2^245324243 is an apocalyptic number.

245324243 is a deficient number, since it is larger than the sum of its proper divisors (2171125).

245324243 is a wasteful number, since it uses less digits than its factorization.

245324243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171124.

The product of its digits is 23040, while the sum is 29.

The square root of 245324243 is about 15662.8299805623. The cubic root of 245324243 is about 626.0083928485.

Adding to 245324243 its reverse (342423542), we get a palindrome (587747785).

The spelling of 245324243 in words is "two hundred forty-five million, three hundred twenty-four thousand, two hundred forty-three".