253505 has 8 divisors (see below), whose sum is σ = 347712. Its totient is φ = 173808.

The previous prime is 253501. The next prime is 253507. The reversal of 253505 is 505352.

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

It is a cyclic number.

It is not a de Polignac number, because 253505 - 2² = 253501 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 253505.

It is not an unprimeable number, because it can be changed into a prime (253501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3587 + ... + 3656.

It is an arithmetic number, because the mean of its divisors is an integer number (43464).

2²⁵³⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

253505 is a deficient number, since it is larger than the sum of its proper divisors (94207).

253505 is an equidigital number, since it uses as much as digits as its factorization.

253505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7255.

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 253505 is about 503.4928003457. The cubic root of 253505 is about 63.2890888272.

Adding to 253505 its reverse (505352), we get a palindrome (758857).

It can be divided in two parts, 253 and 505, that multiplied together give a triangular number (127765 = T₅₀₅).

The spelling of 253505 in words is "two hundred fifty-three thousand, five hundred five".