51677072201 has 2 divisors, whose sum is σ = 51677072202. Its totient is φ = 51677072200.

The previous prime is 51677072197. The next prime is 51677072231. The reversal of 51677072201 is 10227077615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31527553600 + 20149518601 = 177560^2 + 141949^2 .

It is a cyclic number.

It is not a de Polignac number, because 51677072201 - 2² = 51677072197 is a prime.

It is not a weakly prime, because it can be changed into another prime (51677072231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25838536100 + 25838536101.

It is an arithmetic number, because the mean of its divisors is an integer number (25838536101).

Almost surely, 2^51677072201 is an apocalyptic number.

It is an amenable number.

51677072201 is a deficient number, since it is larger than the sum of its proper divisors (1).

51677072201 is an equidigital number, since it uses as much as digits as its factorization.

51677072201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41160, while the sum is 38.

The spelling of 51677072201 in words is "fifty-one billion, six hundred seventy-seven million, seventy-two thousand, two hundred one".