51302770251 has 4 divisors (see below), whose sum is σ = 68403693672. Its totient is φ = 34201846832.

The previous prime is 51302770231. The next prime is 51302770291. The reversal of 51302770251 is 15207720315.

It is a happy number.

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 51302770251 - 2³⁴ = 34122901067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51302770231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8550461706 + ... + 8550461711.

It is an arithmetic number, because the mean of its divisors is an integer number (17100923418).

Almost surely, 2^51302770251 is an apocalyptic number.

51302770251 is a deficient number, since it is larger than the sum of its proper divisors (17100923421).

51302770251 is a wasteful number, since it uses less digits than its factorization.

51302770251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17100923420.

The product of its (nonzero) digits is 14700, while the sum is 33.

The spelling of 51302770251 in words is "fifty-one billion, three hundred two million, seven hundred seventy thousand, two hundred fifty-one".