51198 has 32 divisors (see below), whose sum is σ = 124416. Its totient is φ = 13728.

The previous prime is 51197. The next prime is 51199. The reversal of 51198 is 89115.

It is an interprime number because it is at equal distance from previous prime (51197) and next prime (51199).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 940 + ... + 992.

It is an arithmetic number, because the mean of its divisors is an integer number (3888).

2⁵¹¹⁹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62208).

51198 is an abundant number, since it is smaller than the sum of its proper divisors (73218).

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

51198 is a wasteful number, since it uses less digits than its factorization.

51198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88.

The product of its digits is 360, while the sum is 24.

The square root of 51198 is about 226.2697505192. The cubic root of 51198 is about 37.1322271638.

The spelling of 51198 in words is "fifty-one thousand, one hundred ninety-eight".