51410604005521 has 4 divisors (see below), whose sum is σ = 52800079789492. Its totient is φ = 50021128221552.

The previous prime is 51410604005477. The next prime is 51410604005557. The reversal of 51410604005521 is 12550040601415.

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 27389469915025 + 24021134090496 = 5233495^2 + 4901136^2 .

It is a cyclic number.

It is not a de Polignac number, because 51410604005521 - 2⁷ = 51410604005393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51410604005221) 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, 694737891930 + ... + 694737892003.

It is an arithmetic number, because the mean of its divisors is an integer number (13200019947373).

Almost surely, 2^{51410604005521} is an apocalyptic number.

It is an amenable number.

51410604005521 is a deficient number, since it is larger than the sum of its proper divisors (1389475783971).

51410604005521 is a wasteful number, since it uses less digits than its factorization.

51410604005521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389475783970.

The product of its (nonzero) digits is 24000, while the sum is 34.

Adding to 51410604005521 its reverse (12550040601415), we get a palindrome (63960644606936).

The spelling of 51410604005521 in words is "fifty-one trillion, four hundred ten billion, six hundred four million, five thousand, five hundred twenty-one".