51227531087 has 2 divisors, whose sum is σ = 51227531088. Its totient is φ = 51227531086.

The previous prime is 51227531063. The next prime is 51227531143. The reversal of 51227531087 is 78013572215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51227531087 - 2¹⁸ = 51227268943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51227531387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25613765543 + 25613765544.

It is an arithmetic number, because the mean of its divisors is an integer number (25613765544).

Almost surely, 2^51227531087 is an apocalyptic number.

51227531087 is a deficient number, since it is larger than the sum of its proper divisors (1).

51227531087 is an equidigital number, since it uses as much as digits as its factorization.

51227531087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 41.

The spelling of 51227531087 in words is "fifty-one billion, two hundred twenty-seven million, five hundred thirty-one thousand, eighty-seven".