51205210601227 has 4 divisors (see below), whose sum is σ = 51214680776896. Its totient is φ = 51195740425560.

The previous prime is 51205210601179. The next prime is 51205210601231. The reversal of 51205210601227 is 72210601250215.

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 51205210601227 - 2²⁷ = 51205076383499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51205210601192 and 51205210601201.

It is not an unprimeable number, because it can be changed into a prime (51205210601267) 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, 4735079724 + ... + 4735090537.

It is an arithmetic number, because the mean of its divisors is an integer number (12803670194224).

Almost surely, 2^{51205210601227} is an apocalyptic number.

51205210601227 is a deficient number, since it is larger than the sum of its proper divisors (9470175669).

51205210601227 is an equidigital number, since it uses as much as digits as its factorization.

51205210601227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9470175668.

The product of its (nonzero) digits is 16800, while the sum is 34.

The spelling of 51205210601227 in words is "fifty-one trillion, two hundred five billion, two hundred ten million, six hundred one thousand, two hundred twenty-seven".