51486617 has 8 divisors (see below), whose sum is σ = 63368256. Its totient is φ = 40736592.

The previous prime is 51486613. The next prime is 51486641. The reversal of 51486617 is 71668415.

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

It is not a de Polignac number, because 51486617 - 2² = 51486613 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51486613) 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, 282803 + ... + 282984.

It is an arithmetic number, because the mean of its divisors is an integer number (7921032).

Almost surely, 2^51486617 is an apocalyptic number.

It is an amenable number.

51486617 is a deficient number, since it is larger than the sum of its proper divisors (11881639).

51486617 is a wasteful number, since it uses less digits than its factorization.

51486617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565807.

The product of its digits is 40320, while the sum is 38.

The square root of 51486617 is about 7175.4175488260. The cubic root of 51486617 is about 372.0187126865.

The spelling of 51486617 in words is "fifty-one million, four hundred eighty-six thousand, six hundred seventeen".