51411 has 4 divisors (see below), whose sum is σ = 68552. Its totient is φ = 34272.

The previous prime is 51407. The next prime is 51413. The reversal of 51411 is 11415.

It is a happy number.

51411 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 51411 - 2² = 51407 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

51411 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (51413) 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, 8566 + ... + 8571.

It is an arithmetic number, because the mean of its divisors is an integer number (17138).

2⁵¹⁴¹¹ is an apocalyptic number.

51411 is a deficient number, since it is larger than the sum of its proper divisors (17141).

51411 is a wasteful number, since it uses less digits than its factorization.

51411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17140.

The product of its digits is 20, while the sum is 12.

The square root of 51411 is about 226.7399391373. The cubic root of 51411 is about 37.1836498850.

Adding to 51411 its reverse (11415), we get a palindrome (62826).

It can be divided in two parts, 514 and 11, that added together give a palindrome (525).

The spelling of 51411 in words is "fifty-one thousand, four hundred eleven".