51515001089 has 2 divisors, whose sum is σ = 51515001090. Its totient is φ = 51515001088.

The previous prime is 51515001079. The next prime is 51515001103. The reversal of 51515001089 is 98010051515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36750807025 + 14764194064 = 191705^2 + 121508^2 .

It is a cyclic number.

It is not a de Polignac number, because 51515001089 - 2¹² = 51514996993 is a prime.

It is not a weakly prime, because it can be changed into another prime (51515001079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25757500544 + 25757500545.

It is an arithmetic number, because the mean of its divisors is an integer number (25757500545).

Almost surely, 2^51515001089 is an apocalyptic number.

It is an amenable number.

51515001089 is a deficient number, since it is larger than the sum of its proper divisors (1).

51515001089 is an equidigital number, since it uses as much as digits as its factorization.

51515001089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 35.

The spelling of 51515001089 in words is "fifty-one billion, five hundred fifteen million, one thousand, eighty-nine".