253653 has 4 divisors (see below), whose sum is σ = 338208. Its totient is φ = 169100.

The previous prime is 253651. The next prime is 253661. The reversal of 253653 is 356352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 253653 - 2¹ = 253651 is a prime.

It is a D-number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 253653.

It is not an unprimeable number, because it can be changed into a prime (253651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42273 + ... + 42278.

It is an arithmetic number, because the mean of its divisors is an integer number (84552).

2²⁵³⁶⁵³ is an apocalyptic number.

It is an amenable number.

253653 is a deficient number, since it is larger than the sum of its proper divisors (84555).

253653 is an equidigital number, since it uses as much as digits as its factorization.

253653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84554.

The product of its digits is 2700, while the sum is 24.

The square root of 253653 is about 503.6397522039. The cubic root of 253653 is about 63.3014028025.

The spelling of 253653 in words is "two hundred fifty-three thousand, six hundred fifty-three".