51020542159 has 2 divisors, whose sum is σ = 51020542160. Its totient is φ = 51020542158.

The previous prime is 51020542121. The next prime is 51020542211. The reversal of 51020542159 is 95124502015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51020542159 - 2⁹ = 51020541647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51020542259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25510271079 + 25510271080.

It is an arithmetic number, because the mean of its divisors is an integer number (25510271080).

Almost surely, 2^51020542159 is an apocalyptic number.

51020542159 is a deficient number, since it is larger than the sum of its proper divisors (1).

51020542159 is an equidigital number, since it uses as much as digits as its factorization.

51020542159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 34.

The spelling of 51020542159 in words is "fifty-one billion, twenty million, five hundred forty-two thousand, one hundred fifty-nine".