51222312053 has 6 divisors (see below), whose sum is σ = 56302210902. Its totient is φ = 46565738120.

The previous prime is 51222312023. The next prime is 51222312131. The reversal of 51222312053 is 35021322215.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 32018449969 + 19203862084 = 178937^2 + 138578^2 .

It is not a de Polignac number, because 51222312053 - 2⁸ = 51222311797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51222312023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 211662326 + ... + 211662567.

It is an arithmetic number, because the mean of its divisors is an integer number (9383701817).

Almost surely, 2^51222312053 is an apocalyptic number.

It is an amenable number.

51222312053 is a deficient number, since it is larger than the sum of its proper divisors (5079898849).

51222312053 is a wasteful number, since it uses less digits than its factorization.

51222312053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423324915 (or 423324904 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 51222312053 its reverse (35021322215), we get a palindrome (86243634268).

The spelling of 51222312053 in words is "fifty-one billion, two hundred twenty-two million, three hundred twelve thousand, fifty-three".