245785945 has 8 divisors (see below), whose sum is σ = 295230600. Its totient is φ = 196437120.

The previous prime is 245785937. The next prime is 245785987. The reversal of 245785945 is 549587542.

It can be written as a sum of positive squares in 4 ways, for example, as 57108249 + 188677696 = 7557^2 + 13736^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 245785945 - 2³ = 245785937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18186 + ... + 28675.

It is an arithmetic number, because the mean of its divisors is an integer number (36903825).

Almost surely, 2^245785945 is an apocalyptic number.

It is an amenable number.

245785945 is a deficient number, since it is larger than the sum of its proper divisors (49444655).

245785945 is a wasteful number, since it uses less digits than its factorization.

245785945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47915.

The product of its digits is 2016000, while the sum is 49.

The square root of 245785945 is about 15677.5618321217. The cubic root of 245785945 is about 626.4008641814.

The spelling of 245785945 in words is "two hundred forty-five million, seven hundred eighty-five thousand, nine hundred forty-five".