51424279 has 8 divisors (see below), whose sum is σ = 55998000. Its totient is φ = 47037312.

The previous prime is 51424277. The next prime is 51424313. The reversal of 51424279 is 97242415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51424279 - 2¹ = 51424277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51424277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46114 + ... + 47215.

It is an arithmetic number, because the mean of its divisors is an integer number (6999750).

Almost surely, 2^51424279 is an apocalyptic number.

51424279 is a deficient number, since it is larger than the sum of its proper divisors (4573721).

51424279 is a wasteful number, since it uses less digits than its factorization.

51424279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93377.

The product of its digits is 20160, while the sum is 34.

The square root of 51424279 is about 7171.0723744779. The cubic root of 51424279 is about 371.8685101049.

The spelling of 51424279 in words is "fifty-one million, four hundred twenty-four thousand, two hundred seventy-nine".