51222315573 has 64 divisors (see below), whose sum is σ = 90071251200. Its totient is φ = 28360212480.

The previous prime is 51222315533. The next prime is 51222315581. The reversal of 51222315573 is 37551322215.

51222315573 is a `hidden beast` number, since 51 + 2 + 2 + 2 + 31 + 5 + 573 = 666.

51222315573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51222315573 - 2¹⁴ = 51222299189 is a prime.

It is a super-2 number, since 2×51222315573² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51222315533) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 306133 + ... + 442901.

It is an arithmetic number, because the mean of its divisors is an integer number (1407363300).

Almost surely, 2^51222315573 is an apocalyptic number.

It is an amenable number.

51222315573 is a deficient number, since it is larger than the sum of its proper divisors (38848935627).

51222315573 is a wasteful number, since it uses less digits than its factorization.

51222315573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136899 (or 136893 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

Adding to 51222315573 its reverse (37551322215), we get a palindrome (88773637788).

The spelling of 51222315573 in words is "fifty-one billion, two hundred twenty-two million, three hundred fifteen thousand, five hundred seventy-three".