51225303540321 has 6 divisors (see below), whose sum is σ = 73992105113810. Its totient is φ = 34150202360208.

The previous prime is 51225303540253. The next prime is 51225303540331. The reversal of 51225303540321 is 12304530352215.

51225303540321 is a `hidden beast` number, since 5 + 1 + 2 + 25 + 303 + 5 + 4 + 0 + 321 = 666.

It can be written as a sum of positive squares in only one way, i.e., 47957564019600 + 3267739520721 = 6925140^2 + 1807689^2 .

It is not a de Polignac number, because 51225303540321 - 2⁷ = 51225303540193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51225303540331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2845850196676 + ... + 2845850196693.

Almost surely, 2^{51225303540321} is an apocalyptic number.

It is an amenable number.

51225303540321 is a deficient number, since it is larger than the sum of its proper divisors (22766801573489).

51225303540321 is a wasteful number, since it uses less digits than its factorization.

51225303540321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5691700393375 (or 5691700393372 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 51225303540321 its reverse (12304530352215), we get a palindrome (63529833892536).

The spelling of 51225303540321 in words is "fifty-one trillion, two hundred twenty-five billion, three hundred three million, five hundred forty thousand, three hundred twenty-one".