253444 has 6 divisors (see below), whose sum is σ = 443534. Its totient is φ = 126720.

The previous prime is 253439. The next prime is 253447. The reversal of 253444 is 444352.

It is a happy number.

253444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 213444 + 40000 = 462^2 + 200^2 .

It is a super-2 number, since 2×253444² = 128467722272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (253447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31677 + ... + 31684.

2²⁵³⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

253444 is a deficient number, since it is larger than the sum of its proper divisors (190090).

253444 is a wasteful number, since it uses less digits than its factorization.

253444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63365 (or 63363 counting only the distinct ones).

The product of its digits is 1920, while the sum is 22.

The square root of 253444 is about 503.4322198668. The cubic root of 253444 is about 63.2840120778.

Adding to 253444 its reverse (444352), we get a palindrome (697796).

The spelling of 253444 in words is "two hundred fifty-three thousand, four hundred forty-four".