51466138 has 8 divisors (see below), whose sum is σ = 79689600. Its totient is φ = 24902940.

The previous prime is 51466133. The next prime is 51466139. The reversal of 51466138 is 83166415.

It is a happy number.

51466138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

51466138 is a modest number, since divided by 6138 gives 5146 as remainder.

It is not an unprimeable number, because it can be changed into a prime (51466133) 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, 414988 + ... + 415111.

It is an arithmetic number, because the mean of its divisors is an integer number (9961200).

Almost surely, 2^51466138 is an apocalyptic number.

51466138 is a deficient number, since it is larger than the sum of its proper divisors (28223462).

51466138 is a wasteful number, since it uses less digits than its factorization.

51466138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830132.

The product of its digits is 17280, while the sum is 34.

The square root of 51466138 is about 7173.9903819283. The cubic root of 51466138 is about 371.9693821873.

The spelling of 51466138 in words is "fifty-one million, four hundred sixty-six thousand, one hundred thirty-eight".