245584081 has 4 divisors (see below), whose sum is σ = 245670912. Its totient is φ = 245497252.

The previous prime is 245584069. The next prime is 245584111. The reversal of 245584081 is 180485542.

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 a cyclic number.

It is not a de Polignac number, because 245584081 - 2⁵ = 245584049 is a prime.

It is a super-2 number, since 2×245584081² = 120623081681229122, which contains 22 as substring.

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 245584081.

It is not an unprimeable number, because it can be changed into a prime (245584981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39025 + ... + 44878.

It is an arithmetic number, because the mean of its divisors is an integer number (61417728).

Almost surely, 2^245584081 is an apocalyptic number.

It is an amenable number.

245584081 is a deficient number, since it is larger than the sum of its proper divisors (86831).

245584081 is an equidigital number, since it uses as much as digits as its factorization.

245584081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86830.

The product of its (nonzero) digits is 51200, while the sum is 37.

The square root of 245584081 is about 15671.1225188242. The cubic root of 245584081 is about 626.2293295329.

The spelling of 245584081 in words is "two hundred forty-five million, five hundred eighty-four thousand, eighty-one".