51597998 has 8 divisors (see below), whose sum is σ = 77608992. Its totient is φ = 25728336.

The previous prime is 51597937. The next prime is 51598007. The reversal of 51597998 is 89979515.

51597998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34415 + ... + 35882.

It is an arithmetic number, because the mean of its divisors is an integer number (9701124).

Almost surely, 2^51597998 is an apocalyptic number.

51597998 is a deficient number, since it is larger than the sum of its proper divisors (26010994).

51597998 is a wasteful number, since it uses less digits than its factorization.

51597998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70666.

The product of its digits is 1020600, while the sum is 53.

The square root of 51597998 is about 7183.1746463524. The cubic root of 51597998 is about 372.2867821716.

The spelling of 51597998 in words is "fifty-one million, five hundred ninety-seven thousand, nine hundred ninety-eight".