51998174 has 8 divisors (see below), whose sum is σ = 82102440. Its totient is φ = 24630696.

The previous prime is 51998171. The next prime is 51998183. The reversal of 51998174 is 47189915.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51998171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684149 + ... + 684224.

It is an arithmetic number, because the mean of its divisors is an integer number (10262805).

Almost surely, 2^51998174 is an apocalyptic number.

51998174 is a deficient number, since it is larger than the sum of its proper divisors (30104266).

51998174 is a wasteful number, since it uses less digits than its factorization.

51998174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368394.

The product of its digits is 90720, while the sum is 44.

The square root of 51998174 is about 7210.9759394967. The cubic root of 51998174 is about 373.2467466784.

The spelling of 51998174 in words is "fifty-one million, nine hundred ninety-eight thousand, one hundred seventy-four".