51548461897 has 2 divisors, whose sum is σ = 51548461898. Its totient is φ = 51548461896.

The previous prime is 51548461891. The next prime is 51548461907. The reversal of 51548461897 is 79816484515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47392854601 + 4155607296 = 217699^2 + 64464^2 .

It is a cyclic number.

It is not a de Polignac number, because 51548461897 - 2³⁵ = 17188723529 is a prime.

It is not a weakly prime, because it can be changed into another prime (51548461891) 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, 25774230948 + 25774230949.

It is an arithmetic number, because the mean of its divisors is an integer number (25774230949).

Almost surely, 2^51548461897 is an apocalyptic number.

It is an amenable number.

51548461897 is a deficient number, since it is larger than the sum of its proper divisors (1).

51548461897 is an equidigital number, since it uses as much as digits as its factorization.

51548461897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9676800, while the sum is 58.

The spelling of 51548461897 in words is "fifty-one billion, five hundred forty-eight million, four hundred sixty-one thousand, eight hundred ninety-seven".