51481178 has 8 divisors (see below), whose sum is σ = 88253472. Its totient is φ = 22063356.

The previous prime is 51481163. The next prime is 51481181. The reversal of 51481178 is 87118415.

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

It is a super-3 number, since 3×51481178³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

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, 1838600 + ... + 1838627.

It is an arithmetic number, because the mean of its divisors is an integer number (11031684).

Almost surely, 2^51481178 is an apocalyptic number.

51481178 is a deficient number, since it is larger than the sum of its proper divisors (36772294).

51481178 is a wasteful number, since it uses less digits than its factorization.

51481178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3677236.

The product of its digits is 8960, while the sum is 35.

The square root of 51481178 is about 7175.0385364819. The cubic root of 51481178 is about 372.0056123175.

The spelling of 51481178 in words is "fifty-one million, four hundred eighty-one thousand, one hundred seventy-eight".