10115513 has 2 divisors, whose sum is σ = 10115514. Its totient is φ = 10115512.

The previous prime is 10115509. The next prime is 10115531. The reversal of 10115513 is 31551101.

Together with next prime (10115531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9168784 + 946729 = 3028^2 + 973^2 .

It is a cyclic number.

It is not a de Polignac number, because 10115513 - 2² = 10115509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10115491 and 10115500.

It is not a weakly prime, because it can be changed into another prime (10115533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5057756 + 5057757.

It is an arithmetic number, because the mean of its divisors is an integer number (5057757).

Almost surely, 2^10115513 is an apocalyptic number.

It is an amenable number.

10115513 is a deficient number, since it is larger than the sum of its proper divisors (1).

10115513 is an equidigital number, since it uses as much as digits as its factorization.

10115513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75, while the sum is 17.

The square root of 10115513 is about 3180.4894277454. The cubic root of 10115513 is about 216.2698459294.

Adding to 10115513 its reverse (31551101), we get a palindrome (41666614).

The spelling of 10115513 in words is "ten million, one hundred fifteen thousand, five hundred thirteen".