253549 has 4 divisors (see below), whose sum is σ = 261760. Its totient is φ = 245340.

The previous prime is 253543. The next prime is 253553. The reversal of 253549 is 945352.

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 253549 - 2¹¹ = 251501 is a prime.

It is a Duffinian number.

253549 is a lucky number.

It is a congruent number.

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4059 + ... + 4120.

It is an arithmetic number, because the mean of its divisors is an integer number (65440).

2²⁵³⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

253549 is a deficient number, since it is larger than the sum of its proper divisors (8211).

253549 is an equidigital number, since it uses as much as digits as its factorization.

253549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8210.

The product of its digits is 5400, while the sum is 28.

The square root of 253549 is about 503.5364932157. The cubic root of 253549 is about 63.2927502393.

The spelling of 253549 in words is "two hundred fifty-three thousand, five hundred forty-nine".