51324560087 has 2 divisors, whose sum is σ = 51324560088. Its totient is φ = 51324560086.

The previous prime is 51324560083. The next prime is 51324560117. The reversal of 51324560087 is 78006542315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51324560087 - 2² = 51324560083 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51324560081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25662280043 + 25662280044.

It is an arithmetic number, because the mean of its divisors is an integer number (25662280044).

Almost surely, 2^51324560087 is an apocalyptic number.

51324560087 is a deficient number, since it is larger than the sum of its proper divisors (1).

51324560087 is an equidigital number, since it uses as much as digits as its factorization.

51324560087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 51324560087 in words is "fifty-one billion, three hundred twenty-four million, five hundred sixty thousand, eighty-seven".