51012117 has 24 divisors (see below), whose sum is σ = 80371200. Its totient is φ = 30989088.

The previous prime is 51012107. The next prime is 51012119. The reversal of 51012117 is 71121015.

It is a happy number.

It is not a de Polignac number, because 51012117 - 2¹⁸ = 50749973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51012117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51012119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6484 + ... + 12002.

It is an arithmetic number, because the mean of its divisors is an integer number (3348800).

Almost surely, 2^51012117 is an apocalyptic number.

It is an amenable number.

51012117 is a deficient number, since it is larger than the sum of its proper divisors (29359083).

51012117 is a wasteful number, since it uses less digits than its factorization.

51012117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5617 (or 5614 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 18.

The square root of 51012117 is about 7142.2767378477. The cubic root of 51012117 is about 370.8723439105.

The spelling of 51012117 in words is "fifty-one million, twelve thousand, one hundred seventeen".