51500885 has 8 divisors (see below), whose sum is σ = 63238560. Its totient is φ = 40242384.

The previous prime is 51500881. The next prime is 51500893. The reversal of 51500885 is 58800515.

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

It is a cyclic number.

It is not a de Polignac number, because 51500885 - 2² = 51500881 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51500881) 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, 119555 + ... + 119984.

It is an arithmetic number, because the mean of its divisors is an integer number (7904820).

Almost surely, 2^51500885 is an apocalyptic number.

It is an amenable number.

51500885 is a deficient number, since it is larger than the sum of its proper divisors (11737675).

51500885 is a wasteful number, since it uses less digits than its factorization.

51500885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239587.

The product of its (nonzero) digits is 8000, while the sum is 32.

The square root of 51500885 is about 7176.4117078105. The cubic root of 51500885 is about 372.0530741902.

The spelling of 51500885 in words is "fifty-one million, five hundred thousand, eight hundred eighty-five".