51286017 has 4 divisors (see below), whose sum is σ = 68381360. Its totient is φ = 34190676.

The previous prime is 51286013. The next prime is 51286031. The reversal of 51286017 is 71068215.

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 51286017 - 2² = 51286013 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51286013) 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, 8547667 + ... + 8547672.

It is an arithmetic number, because the mean of its divisors is an integer number (17095340).

Almost surely, 2^51286017 is an apocalyptic number.

It is an amenable number.

51286017 is a deficient number, since it is larger than the sum of its proper divisors (17095343).

51286017 is a wasteful number, since it uses less digits than its factorization.

51286017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17095342.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 51286017 is about 7161.4256262283. The cubic root of 51286017 is about 371.5349359439.

The spelling of 51286017 in words is "fifty-one million, two hundred eighty-six thousand, seventeen".