51060531569 has 2 divisors, whose sum is σ = 51060531570. Its totient is φ = 51060531568.

The previous prime is 51060531563. The next prime is 51060531617. The reversal of 51060531569 is 96513506015.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50991059344 + 69472225 = 225812^2 + 8335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51060531569 is a prime.

It is a super-2 number, since 2×51060531569² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (51060531563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25530265784 + 25530265785.

It is an arithmetic number, because the mean of its divisors is an integer number (25530265785).

Almost surely, 2^51060531569 is an apocalyptic number.

It is an amenable number.

51060531569 is a deficient number, since it is larger than the sum of its proper divisors (1).

51060531569 is an equidigital number, since it uses as much as digits as its factorization.

51060531569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 121500, while the sum is 41.

The spelling of 51060531569 in words is "fifty-one billion, sixty million, five hundred thirty-one thousand, five hundred sixty-nine".