115145489 has 2 divisors, whose sum is σ = 115145490. Its totient is φ = 115145488.

The previous prime is 115145477. The next prime is 115145519. The reversal of 115145489 is 984541511.

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., 104387089 + 10758400 = 10217^2 + 3280^2 .

It is an emirp because it is prime and its reverse (984541511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115145489 - 2¹² = 115141393 is a prime.

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 (115145189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57572744 + 57572745.

It is an arithmetic number, because the mean of its divisors is an integer number (57572745).

Almost surely, 2^115145489 is an apocalyptic number.

It is an amenable number.

115145489 is a deficient number, since it is larger than the sum of its proper divisors (1).

115145489 is an equidigital number, since it uses as much as digits as its factorization.

115145489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 38.

The square root of 115145489 is about 10730.5866102464. The cubic root of 115145489 is about 486.4994005669.

The spelling of 115145489 in words is "one hundred fifteen million, one hundred forty-five thousand, four hundred eighty-nine".