51798857 has 8 divisors (see below), whose sum is σ = 56570400. Its totient is φ = 47037760.

The previous prime is 51798833. The next prime is 51798863. The reversal of 51798857 is 75889715.

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

It is not a de Polignac number, because 51798857 - 2¹² = 51794761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51798157) 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, 10769 + ... + 14817.

It is an arithmetic number, because the mean of its divisors is an integer number (7071300).

Almost surely, 2^51798857 is an apocalyptic number.

It is an amenable number.

51798857 is a deficient number, since it is larger than the sum of its proper divisors (4771543).

51798857 is a wasteful number, since it uses less digits than its factorization.

51798857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5223.

The product of its digits is 705600, while the sum is 50.

The square root of 51798857 is about 7197.1422800998. The cubic root of 51798857 is about 372.7692319626.

The spelling of 51798857 in words is "fifty-one million, seven hundred ninety-eight thousand, eight hundred fifty-seven".