53111 has 4 divisors (see below), whose sum is σ = 53592. Its totient is φ = 52632.

The previous prime is 53101. The next prime is 53113. The reversal of 53111 is 11135.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 53111 - 2⁶ = 53047 is a prime.

It is a Duffinian number.

53111 is a modest number, since divided by 111 gives 53 as remainder.

It is a plaindrome in base 12.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 53092 and 53101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20 + ... + 326.

It is an arithmetic number, because the mean of its divisors is an integer number (13398).

2⁵³¹¹¹ is an apocalyptic number.

53111 is a deficient number, since it is larger than the sum of its proper divisors (481).

53111 is a wasteful number, since it uses less digits than its factorization.

53111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480.

The product of its digits is 15, while the sum is 11.

The square root of 53111 is about 230.4582391671. The cubic root of 53111 is about 37.5890623837.

Adding to 53111 its reverse (11135), we get a palindrome (64246).

The spelling of 53111 in words is "fifty-three thousand, one hundred eleven".