51545052211121 has 16 divisors (see below), whose sum is σ = 59255313848064. Its totient is φ = 43921514457024.

The previous prime is 51545052211117. The next prime is 51545052211127. The reversal of 51545052211121 is 12111225054515.

It is a happy number.

51545052211121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51545052211121 - 2² = 51545052211117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51545052211127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9441875 + ... + 13865031.

It is an arithmetic number, because the mean of its divisors is an integer number (3703457115504).

Almost surely, 2^{51545052211121} is an apocalyptic number.

It is an amenable number.

51545052211121 is a deficient number, since it is larger than the sum of its proper divisors (7710261636943).

51545052211121 is a wasteful number, since it uses less digits than its factorization.

51545052211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4432960.

The product of its (nonzero) digits is 20000, while the sum is 35.

Adding to 51545052211121 its reverse (12111225054515), we get a palindrome (63656277265636).

The spelling of 51545052211121 in words is "fifty-one trillion, five hundred forty-five billion, fifty-two million, two hundred eleven thousand, one hundred twenty-one".