51279 has 4 divisors (see below), whose sum is σ = 68376. Its totient is φ = 34184.

The previous prime is 51263. The next prime is 51283. The reversal of 51279 is 97215.

51279 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 a cyclic number.

It is not a de Polignac number, because 51279 - 2⁴ = 51263 is a prime.

It is a D-number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51229) 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, 8544 + ... + 8549.

It is an arithmetic number, because the mean of its divisors is an integer number (17094).

2⁵¹²⁷⁹ is an apocalyptic number.

51279 is a deficient number, since it is larger than the sum of its proper divisors (17097).

51279 is a wasteful number, since it uses less digits than its factorization.

51279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17096.

The product of its digits is 630, while the sum is 24.

The square root of 51279 is about 226.4486696803. The cubic root of 51279 is about 37.1517990587.

The spelling of 51279 in words is "fifty-one thousand, two hundred seventy-nine".