51678829 has 8 divisors (see below), whose sum is σ = 53948160. Its totient is φ = 49447200.

The previous prime is 51678811. The next prime is 51678853. The reversal of 51678829 is 92887615.

51678829 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 51678829 - 2¹³ = 51670637 is a prime.

It is a super-2 number, since 2×51678829² = 5341402733622482, 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 (51678889) 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, 6607 + ... + 12124.

It is an arithmetic number, because the mean of its divisors is an integer number (6743520).

Almost surely, 2^51678829 is an apocalyptic number.

It is an amenable number.

51678829 is a deficient number, since it is larger than the sum of its proper divisors (2269331).

51678829 is a wasteful number, since it uses less digits than its factorization.

51678829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18851.

The product of its digits is 241920, while the sum is 46.

The square root of 51678829 is about 7188.7988565545. The cubic root of 51678829 is about 372.4810830746.

The spelling of 51678829 in words is "fifty-one million, six hundred seventy-eight thousand, eight hundred twenty-nine".