51424351 has 4 divisors (see below), whose sum is σ = 56099304. Its totient is φ = 46749400.

The previous prime is 51424349. The next prime is 51424357. The reversal of 51424351 is 15342415.

It is a happy number.

51424351 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 51424351 - 2¹ = 51424349 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 (51424357) 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 3 ways as a sum of consecutive naturals, for example, 2337460 + ... + 2337481.

It is an arithmetic number, because the mean of its divisors is an integer number (14024826).

Almost surely, 2^51424351 is an apocalyptic number.

51424351 is a deficient number, since it is larger than the sum of its proper divisors (4674953).

51424351 is a wasteful number, since it uses less digits than its factorization.

51424351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4674952.

The product of its digits is 2400, while the sum is 25.

The square root of 51424351 is about 7171.0773946458. The cubic root of 51424351 is about 371.8686836580.

Adding to 51424351 its reverse (15342415), we get a palindrome (66766766).

The spelling of 51424351 in words is "fifty-one million, four hundred twenty-four thousand, three hundred fifty-one".