245144 has 8 divisors (see below), whose sum is σ = 459660. Its totient is φ = 122568.

The previous prime is 245131. The next prime is 245149. The reversal of 245144 is 441542.

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245149) by changing a digit.

245144 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15314 + ... + 15329.

2²⁴⁵¹⁴⁴ is an apocalyptic number.

It is an amenable number.

245144 is a deficient number, since it is larger than the sum of its proper divisors (214516).

245144 is a wasteful number, since it uses less digits than its factorization.

245144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30649 (or 30645 counting only the distinct ones).

The product of its digits is 640, while the sum is 20.

The square root of 245144 is about 495.1201874293. The cubic root of 245144 is about 62.5855043042.

Adding to 245144 its reverse (441542), we get a palindrome (686686).

The spelling of 245144 in words is "two hundred forty-five thousand, one hundred forty-four".