51404 has 12 divisors (see below), whose sum is σ = 91728. Its totient is φ = 25200.

The previous prime is 51383. The next prime is 51407. The reversal of 51404 is 40415.

51404 is nontrivially palindromic in base 3.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 51404.

It is not an unprimeable number, because it can be changed into a prime (51407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194 + ... + 374.

It is an arithmetic number, because the mean of its divisors is an integer number (7644).

2⁵¹⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

51404 is a deficient number, since it is larger than the sum of its proper divisors (40324).

51404 is a wasteful number, since it uses less digits than its factorization.

51404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 51404 is about 226.7245024253. The cubic root of 51404 is about 37.1819621959.

Adding to 51404 its reverse (40415), we get a palindrome (91819).

The spelling of 51404 in words is "fifty-one thousand, four hundred four".