51351 has 4 divisors (see below), whose sum is σ = 68472. Its totient is φ = 34232.

The previous prime is 51349. The next prime is 51361. The reversal of 51351 is 15315.

51351 is digitally balanced in base 2 and base 4, because in such bases 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 a cyclic number.

It is not a de Polignac number, because 51351 - 2¹ = 51349 is a prime.

It is a D-number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 51351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51341) 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, 8556 + ... + 8561.

It is an arithmetic number, because the mean of its divisors is an integer number (17118).

2⁵¹³⁵¹ is an apocalyptic number.

51351 is a deficient number, since it is larger than the sum of its proper divisors (17121).

51351 is a wasteful number, since it uses less digits than its factorization.

51351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17120.

The product of its digits is 75, while the sum is 15.

The square root of 51351 is about 226.6075903407. The cubic root of 51351 is about 37.1691790035.

Adding to 51351 its reverse (15315), we get a palindrome (66666).

The spelling of 51351 in words is "fifty-one thousand, three hundred fifty-one".