115445287 has 2 divisors, whose sum is σ = 115445288. Its totient is φ = 115445286.

The previous prime is 115445261. The next prime is 115445321. The reversal of 115445287 is 782544511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 115445287 - 2²³ = 107056679 is a prime.

It is a super-2 number, since 2×115445287² = 26655228581024738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115445237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57722643 + 57722644.

It is an arithmetic number, because the mean of its divisors is an integer number (57722644).

Almost surely, 2^115445287 is an apocalyptic number.

115445287 is a deficient number, since it is larger than the sum of its proper divisors (1).

115445287 is an equidigital number, since it uses as much as digits as its factorization.

115445287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44800, while the sum is 37.

The square root of 115445287 is about 10744.5468494488. The cubic root of 115445287 is about 486.9212585990.

Adding to 115445287 its reverse (782544511), we get a palindrome (897989798).

The spelling of 115445287 in words is "one hundred fifteen million, four hundred forty-five thousand, two hundred eighty-seven".