51126717 has 4 divisors (see below), whose sum is σ = 68168960. Its totient is φ = 34084476.

The previous prime is 51126707. The next prime is 51126763. The reversal of 51126717 is 71762115.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51126717 - 2¹¹ = 51124669 is a prime.

It is a super-2 number, since 2×51126717² = 5227882382396178, 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 (51126707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8521117 + ... + 8521122.

It is an arithmetic number, because the mean of its divisors is an integer number (17042240).

Almost surely, 2^51126717 is an apocalyptic number.

It is an amenable number.

51126717 is a deficient number, since it is larger than the sum of its proper divisors (17042243).

51126717 is a wasteful number, since it uses less digits than its factorization.

51126717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17042242.

The product of its digits is 2940, while the sum is 30.

The square root of 51126717 is about 7150.2948890238. The cubic root of 51126717 is about 371.1498608713.

The spelling of 51126717 in words is "fifty-one million, one hundred twenty-six thousand, seven hundred seventeen".