253111 has 4 divisors (see below), whose sum is σ = 255232. Its totient is φ = 250992.

The previous prime is 253109. The next prime is 253133. The reversal of 253111 is 111352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 253111 - 2¹ = 253109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253091 and 253100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253811) 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, 870 + ... + 1123.

It is an arithmetic number, because the mean of its divisors is an integer number (63808).

2²⁵³¹¹¹ is an apocalyptic number.

253111 is a deficient number, since it is larger than the sum of its proper divisors (2121).

253111 is a wasteful number, since it uses less digits than its factorization.

253111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120.

The product of its digits is 30, while the sum is 13.

The square root of 253111 is about 503.1013814332. The cubic root of 253111 is about 63.2562836482.

Adding to 253111 its reverse (111352), we get a palindrome (364463).

It can be divided in two parts, 25 and 3111, that added together give a square (3136 = 56²).

The spelling of 253111 in words is "two hundred fifty-three thousand, one hundred eleven".