51917073 has 8 divisors (see below), whose sum is σ = 74547648. Its totient is φ = 31948944.

The previous prime is 51917071. The next prime is 51917087. The reversal of 51917073 is 37071915.

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

It is not a de Polignac number, because 51917073 - 2¹ = 51917071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51917071) 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, 665565 + ... + 665642.

It is an arithmetic number, because the mean of its divisors is an integer number (9318456).

Almost surely, 2^51917073 is an apocalyptic number.

It is an amenable number.

51917073 is a deficient number, since it is larger than the sum of its proper divisors (22630575).

51917073 is a wasteful number, since it uses less digits than its factorization.

51917073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331223.

The product of its (nonzero) digits is 6615, while the sum is 33.

The square root of 51917073 is about 7205.3503037673. The cubic root of 51917073 is about 373.0525960423.

Adding to 51917073 its reverse (37071915), we get a palindrome (88988988).

The spelling of 51917073 in words is "fifty-one million, nine hundred seventeen thousand, seventy-three".