51412 has 6 divisors (see below), whose sum is σ = 89978. Its totient is φ = 25704.

The previous prime is 51407. The next prime is 51413. The reversal of 51412 is 21415.

It can be written as a sum of positive squares in only one way, i.e., 38416 + 12996 = 196^2 + 114^2 .

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 51392 and 51401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51413) by changing a digit.

51412 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 6423 + ... + 6430.

2⁵¹⁴¹² is an apocalyptic number.

It is an amenable number.

51412 is a deficient number, since it is larger than the sum of its proper divisors (38566).

51412 is a wasteful number, since it uses less digits than its factorization.

51412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12857 (or 12855 counting only the distinct ones).

The product of its digits is 40, while the sum is 13.

The square root of 51412 is about 226.7421442961. The cubic root of 51412 is about 37.1838909710.

Adding to 51412 its reverse (21415), we get a palindrome (72827).

It can be divided in two parts, 51 and 412, that multiplied together give a palindrome (21012).

The spelling of 51412 in words is "fifty-one thousand, four hundred twelve".