51107336557 has 4 divisors (see below), whose sum is σ = 52071625980. Its totient is φ = 50143047136.

The previous prime is 51107336551. The next prime is 51107336611. The reversal of 51107336557 is 75563370115.

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 30928849956 + 20178486601 = 175866^2 + 142051^2 .

It is a cyclic number.

It is not a de Polignac number, because 51107336557 - 2³ = 51107336549 is a prime.

It is a super-3 number, since 3×51107336557³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51107336551) 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 3 ways as a sum of consecutive naturals, for example, 482144632 + ... + 482144737.

It is an arithmetic number, because the mean of its divisors is an integer number (13017906495).

Almost surely, 2^51107336557 is an apocalyptic number.

It is an amenable number.

51107336557 is a deficient number, since it is larger than the sum of its proper divisors (964289423).

51107336557 is an equidigital number, since it uses as much as digits as its factorization.

51107336557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964289422.

The product of its (nonzero) digits is 330750, while the sum is 43.

The spelling of 51107336557 in words is "fifty-one billion, one hundred seven million, three hundred thirty-six thousand, five hundred fifty-seven".