51198593 has 4 divisors (see below), whose sum is σ = 51279108. Its totient is φ = 51118080.

The previous prime is 51198569. The next prime is 51198613. The reversal of 51198593 is 39589115.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25321024 + 25877569 = 5032^2 + 5087^2 .

It is a cyclic number.

It is not a de Polignac number, because 51198593 - 2¹⁰ = 51197569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51198593.

It is not an unprimeable number, because it can be changed into a prime (51198503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39296 + ... + 40577.

It is an arithmetic number, because the mean of its divisors is an integer number (12819777).

Almost surely, 2^51198593 is an apocalyptic number.

It is an amenable number.

51198593 is a deficient number, since it is larger than the sum of its proper divisors (80515).

51198593 is an equidigital number, since it uses as much as digits as its factorization.

51198593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80514.

The product of its digits is 48600, while the sum is 41.

The square root of 51198593 is about 7155.3192102100. The cubic root of 51198593 is about 371.3237052435.

The spelling of 51198593 in words is "fifty-one million, one hundred ninety-eight thousand, five hundred ninety-three".