51279129 has 16 divisors (see below), whose sum is σ = 82875840. Its totient is φ = 31078080.

The previous prime is 51279127. The next prime is 51279133. The reversal of 51279129 is 92197215.

51279129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51279129 - 2¹ = 51279127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51279093 and 51279102.

It is not an unprimeable number, because it can be changed into a prime (51279127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86032 + ... + 86625.

It is an arithmetic number, because the mean of its divisors is an integer number (5179740).

Almost surely, 2^51279129 is an apocalyptic number.

It is an amenable number.

51279129 is a deficient number, since it is larger than the sum of its proper divisors (31596711).

51279129 is a wasteful number, since it uses less digits than its factorization.

51279129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172677 (or 172671 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 51279129 is about 7160.9447002473. The cubic root of 51279129 is about 371.5183021234.

The spelling of 51279129 in words is "fifty-one million, two hundred seventy-nine thousand, one hundred twenty-nine".