51000117 has 8 divisors (see below), whose sum is σ = 77714496. Its totient is φ = 29142912.

The previous prime is 51000113. The next prime is 51000127. The reversal of 51000117 is 71100015.

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

It is not a de Polignac number, because 51000117 - 2² = 51000113 is a prime.

51000117 is a modest number, since divided by 117 gives 51 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 51000096 and 51000105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51000113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1214268 + ... + 1214309.

It is an arithmetic number, because the mean of its divisors is an integer number (9714312).

Almost surely, 2^51000117 is an apocalyptic number.

It is an amenable number.

51000117 is a deficient number, since it is larger than the sum of its proper divisors (26714379).

51000117 is a wasteful number, since it uses less digits than its factorization.

51000117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428587.

The product of its (nonzero) digits is 35, while the sum is 15.

The square root of 51000117 is about 7141.4366201766. The cubic root of 51000117 is about 370.8432605122.

The spelling of 51000117 in words is "fifty-one million, one hundred seventeen", and thus it is an aban number.