51408717 has 8 divisors (see below), whose sum is σ = 69484224. Its totient is φ = 33802848.

The previous prime is 51408713. The next prime is 51408719. The reversal of 51408717 is 71780415.

51408717 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 not a de Polignac number, because 51408717 - 2² = 51408713 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51408713) 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, 117153 + ... + 117590.

It is an arithmetic number, because the mean of its divisors is an integer number (8685528).

Almost surely, 2^51408717 is an apocalyptic number.

It is an amenable number.

51408717 is a deficient number, since it is larger than the sum of its proper divisors (18075507).

51408717 is a wasteful number, since it uses less digits than its factorization.

51408717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234819.

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 51408717 is about 7169.9872384824. The cubic root of 51408717 is about 371.8309947411.

It can be divided in two parts, 51408 and 717, that added together give a palindrome (52125).

The spelling of 51408717 in words is "fifty-one million, four hundred eight thousand, seven hundred seventeen".