51275073601 has 4 divisors (see below), whose sum is σ = 51317207172. Its totient is φ = 51232940032.

The previous prime is 51275073511. The next prime is 51275073649. The reversal of 51275073601 is 10637057215.

It is a Cunningham number, because it is equal to 226440²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17207142976 + 34067930625 = 131176^2 + 184575^2 .

It is a cyclic number.

It is not a de Polignac number, because 51275073601 - 2²⁵ = 51241519169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51275073671) 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, 21064960 + ... + 21067393.

It is an arithmetic number, because the mean of its divisors is an integer number (12829301793).

Almost surely, 2^51275073601 is an apocalyptic number.

It is an amenable number.

51275073601 is a deficient number, since it is larger than the sum of its proper divisors (42133571).

51275073601 is a wasteful number, since it uses less digits than its factorization.

51275073601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42133570.

The product of its (nonzero) digits is 44100, while the sum is 37.

The spelling of 51275073601 in words is "fifty-one billion, two hundred seventy-five million, seventy-three thousand, six hundred one".