51522205051 has 4 divisors (see below), whose sum is σ = 51548615104. Its totient is φ = 51495795000.

The previous prime is 51522205037. The next prime is 51522205117. The reversal of 51522205051 is 15050222515.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51522205051 - 2¹¹ = 51522203003 is a prime.

It is a super-2 number, since 2×51522205051² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51522205151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13202100 + ... + 13206001.

It is an arithmetic number, because the mean of its divisors is an integer number (12887153776).

Almost surely, 2^51522205051 is an apocalyptic number.

51522205051 is a deficient number, since it is larger than the sum of its proper divisors (26410053).

51522205051 is a wasteful number, since it uses less digits than its factorization.

51522205051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26410052.

The product of its (nonzero) digits is 5000, while the sum is 28.

Adding to 51522205051 its reverse (15050222515), we get a palindrome (66572427566).

The spelling of 51522205051 in words is "fifty-one billion, five hundred twenty-two million, two hundred five thousand, fifty-one".