51365455201 has 2 divisors, whose sum is σ = 51365455202. Its totient is φ = 51365455200.

The previous prime is 51365455199. The next prime is 51365455231. The reversal of 51365455201 is 10255456315.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39386371600 + 11979083601 = 198460^2 + 109449^2 .

It is a cyclic number.

It is not a de Polignac number, because 51365455201 - 2¹ = 51365455199 is a prime.

Together with 51365455199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51365455231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25682727600 + 25682727601.

It is an arithmetic number, because the mean of its divisors is an integer number (25682727601).

Almost surely, 2^51365455201 is an apocalyptic number.

It is an amenable number.

51365455201 is a deficient number, since it is larger than the sum of its proper divisors (1).

51365455201 is an equidigital number, since it uses as much as digits as its factorization.

51365455201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 51365455201 in words is "fifty-one billion, three hundred sixty-five million, four hundred fifty-five thousand, two hundred one".