245322815 has 4 divisors (see below), whose sum is σ = 294387384. Its totient is φ = 196258248.

The previous prime is 245322799. The next prime is 245322863. The reversal of 245322815 is 518223542.

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 245322815 - 2⁴ = 245322799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24532277 + ... + 24532286.

It is an arithmetic number, because the mean of its divisors is an integer number (73596846).

Almost surely, 2^245322815 is an apocalyptic number.

245322815 is a deficient number, since it is larger than the sum of its proper divisors (49064569).

245322815 is an equidigital number, since it uses as much as digits as its factorization.

245322815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49064568.

The product of its digits is 19200, while the sum is 32.

The square root of 245322815 is about 15662.7843948642. The cubic root of 245322815 is about 626.0071782088.

The spelling of 245322815 in words is "two hundred forty-five million, three hundred twenty-two thousand, eight hundred fifteen".