253105 has 8 divisors (see below), whose sum is σ = 306432. Its totient is φ = 200688.

The previous prime is 253103. The next prime is 253109. The reversal of 253105 is 501352.

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 253105 - 2¹ = 253103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253103) 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 7 ways as a sum of consecutive naturals, for example, 1002 + ... + 1228.

It is an arithmetic number, because the mean of its divisors is an integer number (38304).

253105 is a Friedman number, since it can be written as 15^5/3-20, using all its digits and the basic arithmetic operations.

2²⁵³¹⁰⁵ is an apocalyptic number.

It is an amenable number.

253105 is a deficient number, since it is larger than the sum of its proper divisors (53327).

253105 is a wasteful number, since it uses less digits than its factorization.

253105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 253105 is about 503.0954183850. The cubic root of 253105 is about 63.2557838139.

Adding to 253105 its reverse (501352), we get a palindrome (754457).

It can be divided in two parts, 253 and 105, that multiplied together give a triangular number (26565 = T₂₃₀).

The spelling of 253105 in words is "two hundred fifty-three thousand, one hundred five".