245444 has 12 divisors (see below), whose sum is σ = 439824. Its totient is φ = 119784.

The previous prime is 245437. The next prime is 245471. The reversal of 245444 is 444542.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 245444.

It is an unprimeable number.

245444 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 in 3 ways as a sum of consecutive naturals, for example, 542 + ... + 885.

It is an arithmetic number, because the mean of its divisors is an integer number (36652).

2²⁴⁵⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

245444 is a deficient number, since it is larger than the sum of its proper divisors (194380).

245444 is a wasteful number, since it uses less digits than its factorization.

245444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474 (or 1472 counting only the distinct ones).

The product of its digits is 2560, while the sum is 23.

The square root of 245444 is about 495.4230515428. The cubic root of 245444 is about 62.6110239953.

Adding to 245444 its product of digits (2560), we get a square (248004 = 498²).

Adding to 245444 its reverse (444542), we get a palindrome (689986).

The spelling of 245444 in words is "two hundred forty-five thousand, four hundred forty-four".