518101 has 2 divisors, whose sum is σ = 518102. Its totient is φ = 518100.

The previous prime is 518099. The next prime is 518113. The reversal of 518101 is 101815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378225 + 139876 = 615^2 + 374^2 .

It is a cyclic number.

It is not a de Polignac number, because 518101 - 2¹ = 518099 is a prime.

Together with 518099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (518131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259050 + 259051.

It is an arithmetic number, because the mean of its divisors is an integer number (259051).

2⁵¹⁸¹⁰¹ is an apocalyptic number.

It is an amenable number.

518101 is a deficient number, since it is larger than the sum of its proper divisors (1).

518101 is an equidigital number, since it uses as much as digits as its factorization.

518101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 518101 is about 719.7923311623. The cubic root of 518101 is about 80.3165065603.

Adding to 518101 its reverse (101815), we get a palindrome (619916).

The spelling of 518101 in words is "five hundred eighteen thousand, one hundred one".