51056106061 has 2 divisors, whose sum is σ = 51056106062. Its totient is φ = 51056106060.

The previous prime is 51056106019. The next prime is 51056106071. The reversal of 51056106061 is 16060165015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32585665225 + 18470440836 = 180515^2 + 135906^2 .

It is a cyclic number.

It is not a de Polignac number, because 51056106061 - 2¹¹ = 51056104013 is a prime.

It is a super-2 number, since 2×51056106061² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51056106071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25528053030 + 25528053031.

It is an arithmetic number, because the mean of its divisors is an integer number (25528053031).

Almost surely, 2^51056106061 is an apocalyptic number.

It is an amenable number.

51056106061 is a deficient number, since it is larger than the sum of its proper divisors (1).

51056106061 is an equidigital number, since it uses as much as digits as its factorization.

51056106061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 51056106061 in words is "fifty-one billion, fifty-six million, one hundred six thousand, sixty-one".