51326514225251 has 4 divisors (see below), whose sum is σ = 51366333089400. Its totient is φ = 51286695361104.

The previous prime is 51326514225223. The next prime is 51326514225269. The reversal of 51326514225251 is 15252241562315.

51326514225251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51326514225251 - 2⁶ = 51326514225187 is a prime.

It is a super-2 number, since 2×51326514225251² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51326514225221) 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 3 ways as a sum of consecutive naturals, for example, 19909430141 + ... + 19909432718.

It is an arithmetic number, because the mean of its divisors is an integer number (12841583272350).

Almost surely, 2^{51326514225251} is an apocalyptic number.

51326514225251 is a deficient number, since it is larger than the sum of its proper divisors (39818864149).

51326514225251 is a wasteful number, since it uses less digits than its factorization.

51326514225251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39818864148.

The product of its digits is 720000, while the sum is 44.

Adding to 51326514225251 its reverse (15252241562315), we get a palindrome (66578755787566).

The spelling of 51326514225251 in words is "fifty-one trillion, three hundred twenty-six billion, five hundred fourteen million, two hundred twenty-five thousand, two hundred fifty-one".