245238845 has 4 divisors (see below), whose sum is σ = 294286620. Its totient is φ = 196191072.

The previous prime is 245238841. The next prime is 245238881. The reversal of 245238845 is 548832542.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40691641 + 204547204 = 6379^2 + 14302^2 .

It is a cyclic number.

It is not a de Polignac number, because 245238845 - 2² = 245238841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245238841) 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, 24523880 + ... + 24523889.

It is an arithmetic number, because the mean of its divisors is an integer number (73571655).

Almost surely, 2^245238845 is an apocalyptic number.

It is an amenable number.

245238845 is a deficient number, since it is larger than the sum of its proper divisors (49047775).

245238845 is an equidigital number, since it uses as much as digits as its factorization.

245238845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49047774.

The product of its digits is 307200, while the sum is 41.

The square root of 245238845 is about 15660.1036075755. The cubic root of 245238845 is about 625.9357460411.

The spelling of 245238845 in words is "two hundred forty-five million, two hundred thirty-eight thousand, eight hundred forty-five".