51000061051 has 2 divisors, whose sum is σ = 51000061052. Its totient is φ = 51000061050.

The previous prime is 51000061037. The next prime is 51000061067. The reversal of 51000061051 is 15016000015.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51000061051 is a prime.

It is not a weakly prime, because it can be changed into another prime (51000071051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25500030525 + 25500030526.

It is an arithmetic number, because the mean of its divisors is an integer number (25500030526).

Almost surely, 2^51000061051 is an apocalyptic number.

51000061051 is a deficient number, since it is larger than the sum of its proper divisors (1).

51000061051 is an equidigital number, since it uses as much as digits as its factorization.

51000061051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150, while the sum is 19.

Adding to 51000061051 its reverse (15016000015), we get a palindrome (66016061066).

The spelling of 51000061051 in words is "fifty-one billion, sixty-one thousand, fifty-one".