51278119 has 8 divisors (see below), whose sum is σ = 53127360. Its totient is φ = 49434336.

The previous prime is 51278111. The next prime is 51278153. The reversal of 51278119 is 91187215.

It is a happy number.

51278119 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.

It is a cyclic number.

It is not a de Polignac number, because 51278119 - 2³ = 51278111 is a prime.

It is a super-2 number, since 2×51278119² = 5258890976356322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51278111) 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 7 ways as a sum of consecutive naturals, for example, 31602 + ... + 33184.

It is an arithmetic number, because the mean of its divisors is an integer number (6640920).

Almost surely, 2^51278119 is an apocalyptic number.

51278119 is a deficient number, since it is larger than the sum of its proper divisors (1849241).

51278119 is a wasteful number, since it uses less digits than its factorization.

51278119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2729.

The product of its digits is 5040, while the sum is 34.

The square root of 51278119 is about 7160.8741784785. The cubic root of 51278119 is about 371.5158629507.

The spelling of 51278119 in words is "fifty-one million, two hundred seventy-eight thousand, one hundred nineteen".