51020542211 has 2 divisors, whose sum is σ = 51020542212. Its totient is φ = 51020542210.

The previous prime is 51020542159. The next prime is 51020542259. The reversal of 51020542211 is 11224502015.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51020542211 - 2¹⁸ = 51020280067 is a prime.

It is a super-3 number, since 3×51020542211³ (a number of 33 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (51020562211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25510271105 + 25510271106.

It is an arithmetic number, because the mean of its divisors is an integer number (25510271106).

Almost surely, 2^51020542211 is an apocalyptic number.

51020542211 is a deficient number, since it is larger than the sum of its proper divisors (1).

51020542211 is an equidigital number, since it uses as much as digits as its factorization.

51020542211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 800, while the sum is 23.

The spelling of 51020542211 in words is "fifty-one billion, twenty million, five hundred forty-two thousand, two hundred eleven".