51917874 has 8 divisors (see below), whose sum is σ = 103835760. Its totient is φ = 17305956.

The previous prime is 51917869. The next prime is 51917891. The reversal of 51917874 is 47871915.

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

51917874 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4326484 + ... + 4326495.

It is an arithmetic number, because the mean of its divisors is an integer number (12979470).

Almost surely, 2^51917874 is an apocalyptic number.

51917874 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51917874 is a wasteful number, since it uses less digits than its factorization.

51917874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8652984.

The product of its digits is 70560, while the sum is 42.

The square root of 51917874 is about 7205.4058872488. The cubic root of 51917874 is about 373.0545145736.

The spelling of 51917874 in words is "fifty-one million, nine hundred seventeen thousand, eight hundred seventy-four".