51427138 has 8 divisors (see below), whose sum is σ = 88160832. Its totient is φ = 22040196.

The previous prime is 51427133. The next prime is 51427147. The reversal of 51427138 is 83172415.

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

It is not an unprimeable number, because it can be changed into a prime (51427133) 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 3 ways as a sum of consecutive naturals, for example, 1836670 + ... + 1836697.

It is an arithmetic number, because the mean of its divisors is an integer number (11020104).

Almost surely, 2^51427138 is an apocalyptic number.

51427138 is a deficient number, since it is larger than the sum of its proper divisors (36733694).

51427138 is a wasteful number, since it uses less digits than its factorization.

51427138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673376.

The product of its digits is 6720, while the sum is 31.

The square root of 51427138 is about 7171.2717142777. The cubic root of 51427138 is about 371.8754014825.

The spelling of 51427138 in words is "fifty-one million, four hundred twenty-seven thousand, one hundred thirty-eight".