245648851 has 4 divisors (see below), whose sum is σ = 280741552. Its totient is φ = 210556152.

The previous prime is 245648849. The next prime is 245648873. The reversal of 245648851 is 158846542.

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 245648851 - 2¹ = 245648849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 245648798 and 245648807.

It is not an unprimeable number, because it can be changed into a prime (245642851) 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, 17546340 + ... + 17546353.

It is an arithmetic number, because the mean of its divisors is an integer number (70185388).

Almost surely, 2^245648851 is an apocalyptic number.

245648851 is a deficient number, since it is larger than the sum of its proper divisors (35092701).

245648851 is an equidigital number, since it uses as much as digits as its factorization.

245648851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35092700.

The product of its digits is 307200, while the sum is 43.

The square root of 245648851 is about 15673.1889224880. The cubic root of 245648851 is about 626.2843783078.

The spelling of 245648851 in words is "two hundred forty-five million, six hundred forty-eight thousand, eight hundred fifty-one".