115213543 has 2 divisors, whose sum is σ = 115213544. Its totient is φ = 115213542.

The previous prime is 115213541. The next prime is 115213547. The reversal of 115213543 is 345312511.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 115213543 - 2¹ = 115213541 is a prime.

It is a super-2 number, since 2×115213543² = 26548320981225698, which contains 22 as substring.

Together with 115213541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115213541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57606771 + 57606772.

It is an arithmetic number, because the mean of its divisors is an integer number (57606772).

Almost surely, 2^115213543 is an apocalyptic number.

115213543 is a deficient number, since it is larger than the sum of its proper divisors (1).

115213543 is an equidigital number, since it uses as much as digits as its factorization.

115213543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 25.

The square root of 115213543 is about 10733.7571707208. The cubic root of 115213543 is about 486.5952263204.

The spelling of 115213543 in words is "one hundred fifteen million, two hundred thirteen thousand, five hundred forty-three".