253538 has 8 divisors (see below), whose sum is σ = 402732. Its totient is φ = 119296.

The previous prime is 253537. The next prime is 253543. The reversal of 253538 is 835352.

It can be written as a sum of positive squares in 2 ways, for example, as 253009 + 529 = 503^2 + 23^2 .

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253531) 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, 3695 + ... + 3762.

2²⁵³⁵³⁸ is an apocalyptic number.

253538 is a deficient number, since it is larger than the sum of its proper divisors (149194).

253538 is a wasteful number, since it uses less digits than its factorization.

253538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7476.

The product of its digits is 3600, while the sum is 26.

The square root of 253538 is about 503.5255703537. The cubic root of 253538 is about 63.2918349260.

The spelling of 253538 in words is "two hundred fifty-three thousand, five hundred thirty-eight".