245641 has 8 divisors (see below), whose sum is σ = 271584. Its totient is φ = 220320.

The previous prime is 245639. The next prime is 245653. The reversal of 245641 is 146542.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245641 - 2¹ = 245639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1426 + ... + 1588.

It is an arithmetic number, because the mean of its divisors is an integer number (33948).

2²⁴⁵⁶⁴¹ is an apocalyptic number.

It is an amenable number.

245641 is a deficient number, since it is larger than the sum of its proper divisors (25943).

245641 is a wasteful number, since it uses less digits than its factorization.

245641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311.

The product of its digits is 960, while the sum is 22.

The square root of 245641 is about 495.6218316418. The cubic root of 245641 is about 62.6277706167.

Subtracting from 245641 its reverse (146542), we obtain a palindrome (99099).

It can be divided in two parts, 24 and 5641, that added together give a palindrome (5665).

The spelling of 245641 in words is "two hundred forty-five thousand, six hundred forty-one".