51504215201 has 2 divisors, whose sum is σ = 51504215202. Its totient is φ = 51504215200.

The previous prime is 51504215159. The next prime is 51504215219. The reversal of 51504215201 is 10251240515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46233600400 + 5270614801 = 215020^2 + 72599^2 .

It is a cyclic number.

It is not a de Polignac number, because 51504215201 - 2⁶ = 51504215137 is a prime.

It is not a weakly prime, because it can be changed into another prime (51504215281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25752107600 + 25752107601.

It is an arithmetic number, because the mean of its divisors is an integer number (25752107601).

Almost surely, 2^51504215201 is an apocalyptic number.

It is an amenable number.

51504215201 is a deficient number, since it is larger than the sum of its proper divisors (1).

51504215201 is an equidigital number, since it uses as much as digits as its factorization.

51504215201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 51504215201 its reverse (10251240515), we get a palindrome (61755455716).

The spelling of 51504215201 in words is "fifty-one billion, five hundred four million, two hundred fifteen thousand, two hundred one".