245856441 has 4 divisors (see below), whose sum is σ = 327808592. Its totient is φ = 163904292.

The previous prime is 245856437. The next prime is 245856449. The reversal of 245856441 is 144658542.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 245856441 - 2² = 245856437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245856441.

It is not an unprimeable number, because it can be changed into a prime (245856449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40976071 + ... + 40976076.

It is an arithmetic number, because the mean of its divisors is an integer number (81952148).

Almost surely, 2^245856441 is an apocalyptic number.

It is an amenable number.

245856441 is a deficient number, since it is larger than the sum of its proper divisors (81952151).

245856441 is an equidigital number, since it uses as much as digits as its factorization.

245856441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81952150.

The product of its digits is 153600, while the sum is 39.

The square root of 245856441 is about 15679.8099797160. The cubic root of 245856441 is about 626.4607462794.

The spelling of 245856441 in words is "two hundred forty-five million, eight hundred fifty-six thousand, four hundred forty-one".