253544 has 16 divisors (see below), whose sum is σ = 487620. Its totient is φ = 123520.

The previous prime is 253543. The next prime is 253553. The reversal of 253544 is 445352.

Added to its reverse (445352) it gives a square (698896 = 836²).

It can be written as a sum of positive squares in 2 ways, for example, as 184900 + 68644 = 430^2 + 262^2 .

It is not an unprimeable number, because it can be changed into a prime (253543) by changing a digit.

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, 59 + ... + 714.

2²⁵³⁵⁴⁴ is an apocalyptic number.

It is an amenable number.

253544 is a deficient number, since it is larger than the sum of its proper divisors (234076).

253544 is a wasteful number, since it uses less digits than its factorization.

253544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820 (or 816 counting only the distinct ones).

The product of its digits is 2400, while the sum is 23.

The square root of 253544 is about 503.5315283078. The cubic root of 253544 is about 63.2923341911.

Adding to 253544 its reverse (445352), we get a palindrome (698896).

It can be divided in two parts, 253 and 544, that added together give a palindrome (797).

The spelling of 253544 in words is "two hundred fifty-three thousand, five hundred forty-four".