51595759609 has 3 divisors (see below), whose sum is σ = 51595986757. Its totient is φ = 51595532462.

The previous prime is 51595759603. The next prime is 51595759613. The reversal of 51595759609 is 90695759515.

The square root of 51595759609 is 227147.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 51595759609 - 2¹⁵ = 51595726841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51595759603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 113574 + ... + 340720.

Almost surely, 2^51595759609 is an apocalyptic number.

51595759609 is the 227147-th square number.

51595759609 is the 113574-th centered octagonal number.

It is an amenable number.

51595759609 is a deficient number, since it is larger than the sum of its proper divisors (227148).

51595759609 is an frugal number, since it uses more digits than its factorization.

51595759609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454294 (or 227147 counting only the distinct ones).

The product of its (nonzero) digits is 19136250, while the sum is 61.

The spelling of 51595759609 in words is "fifty-one billion, five hundred ninety-five million, seven hundred fifty-nine thousand, six hundred nine".