51598 has 4 divisors (see below), whose sum is σ = 77400. Its totient is φ = 25798.

The previous prime is 51593. The next prime is 51599. The reversal of 51598 is 89515.

51598 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89515 = 5 ⋅17903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12898 + ... + 12901.

It is an arithmetic number, because the mean of its divisors is an integer number (19350).

2⁵¹⁵⁹⁸ is an apocalyptic number.

51598 is a deficient number, since it is larger than the sum of its proper divisors (25802).

51598 is a wasteful number, since it uses less digits than its factorization.

51598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25801.

The product of its digits is 1800, while the sum is 28.

The square root of 51598 is about 227.1519315348. The cubic root of 51598 is about 37.2286786982.

The spelling of 51598 in words is "fifty-one thousand, five hundred ninety-eight".