51878843 has 8 divisors (see below), whose sum is σ = 52565760. Its totient is φ = 51195880.

The previous prime is 51878839. The next prime is 51878851. The reversal of 51878843 is 34887815.

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 51878843 - 2² = 51878839 is a prime.

It is a super-3 number, since 3×51878843³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51878794 and 51878803.

It is not an unprimeable number, because it can be changed into a prime (51878863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32498 + ... + 34056.

It is an arithmetic number, because the mean of its divisors is an integer number (6570720).

Almost surely, 2^51878843 is an apocalyptic number.

51878843 is a deficient number, since it is larger than the sum of its proper divisors (686917).

51878843 is a wasteful number, since it uses less digits than its factorization.

51878843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977.

The product of its digits is 215040, while the sum is 44.

The square root of 51878843 is about 7202.6969254579. The cubic root of 51878843 is about 372.9610057298.

The spelling of 51878843 in words is "fifty-one million, eight hundred seventy-eight thousand, eight hundred forty-three".