51554849153 has 4 divisors (see below), whose sum is σ = 51740968020. Its totient is φ = 51368730288.

The previous prime is 51554849141. The next prime is 51554849167. The reversal of 51554849153 is 35194845515.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35194845515 = 5 ⋅7038969103.

It can be written as a sum of positive squares in 2 ways, for example, as 11144602624 + 40410246529 = 105568^2 + 201023^2 .

It is a cyclic number.

It is not a de Polignac number, because 51554849153 - 2¹² = 51554845057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51553849153) 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, 93059018 + ... + 93059571.

It is an arithmetic number, because the mean of its divisors is an integer number (12935242005).

Almost surely, 2^51554849153 is an apocalyptic number.

It is an amenable number.

51554849153 is a deficient number, since it is larger than the sum of its proper divisors (186118867).

51554849153 is a wasteful number, since it uses less digits than its factorization.

51554849153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186118866.

The product of its digits is 2160000, while the sum is 50.

The spelling of 51554849153 in words is "fifty-one billion, five hundred fifty-four million, eight hundred forty-nine thousand, one hundred fifty-three".