51442113 has 8 divisors (see below), whose sum is σ = 70802176. Its totient is φ = 33188400.

The previous prime is 51442109. The next prime is 51442129. The reversal of 51442113 is 31124415.

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

It is not a de Polignac number, because 51442113 - 2² = 51442109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51442113.

It is not an unprimeable number, because it can be changed into a prime (51442133) 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, 276478 + ... + 276663.

It is an arithmetic number, because the mean of its divisors is an integer number (8850272).

Almost surely, 2^51442113 is an apocalyptic number.

It is an amenable number.

51442113 is a deficient number, since it is larger than the sum of its proper divisors (19360063).

51442113 is a wasteful number, since it uses less digits than its factorization.

51442113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553175.

The product of its digits is 480, while the sum is 21.

The square root of 51442113 is about 7172.3157348237. The cubic root of 51442113 is about 371.9114932810.

Adding to 51442113 its reverse (31124415), we get a palindrome (82566528).

The spelling of 51442113 in words is "fifty-one million, four hundred forty-two thousand, one hundred thirteen".