245556239 has 4 divisors (see below), whose sum is σ = 253477440. Its totient is φ = 237635040.

The previous prime is 245556173. The next prime is 245556263. The reversal of 245556239 is 932655542.

245556239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 245556239 - 2⁸ = 245555983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245556196 and 245556205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245516239) 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, 3960554 + ... + 3960615.

It is an arithmetic number, because the mean of its divisors is an integer number (63369360).

Almost surely, 2^245556239 is an apocalyptic number.

245556239 is a deficient number, since it is larger than the sum of its proper divisors (7921201).

245556239 is an equidigital number, since it uses as much as digits as its factorization.

245556239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7921200.

The product of its digits is 324000, while the sum is 41.

The square root of 245556239 is about 15670.2341718304. The cubic root of 245556239 is about 626.2056633193.

The spelling of 245556239 in words is "two hundred forty-five million, five hundred fifty-six thousand, two hundred thirty-nine".