115220513 has 2 divisors, whose sum is σ = 115220514. Its totient is φ = 115220512.

The previous prime is 115220471. The next prime is 115220527. The reversal of 115220513 is 315022511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92486689 + 22733824 = 9617^2 + 4768^2 .

It is a cyclic number.

It is not a de Polignac number, because 115220513 - 2¹⁴ = 115204129 is a prime.

It is not a weakly prime, because it can be changed into another prime (115220113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57610256 + 57610257.

It is an arithmetic number, because the mean of its divisors is an integer number (57610257).

Almost surely, 2^115220513 is an apocalyptic number.

It is an amenable number.

115220513 is a deficient number, since it is larger than the sum of its proper divisors (1).

115220513 is an equidigital number, since it uses as much as digits as its factorization.

115220513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 115220513 is about 10734.0818424307. The cubic root of 115220513 is about 486.6050385359.

The spelling of 115220513 in words is "one hundred fifteen million, two hundred twenty thousand, five hundred thirteen".