115645253 has 4 divisors (see below), whose sum is σ = 115671840. Its totient is φ = 115618668.

The previous prime is 115645247. The next prime is 115645259. The reversal of 115645253 is 352546511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 352546511 = 61 ⋅5779451.

It is an interprime number because it is at equal distance from previous prime (115645247) and next prime (115645259).

It is a cyclic number.

It is not a de Polignac number, because 115645253 - 2¹⁴ = 115628869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115645259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5075 + ... + 16032.

It is an arithmetic number, because the mean of its divisors is an integer number (28917960).

Almost surely, 2^115645253 is an apocalyptic number.

It is an amenable number.

115645253 is a deficient number, since it is larger than the sum of its proper divisors (26587).

115645253 is an equidigital number, since it uses as much as digits as its factorization.

115645253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26586.

The product of its digits is 18000, while the sum is 32.

The square root of 115645253 is about 10753.8482879386. The cubic root of 115645253 is about 487.2022330623.

The spelling of 115645253 in words is "one hundred fifteen million, six hundred forty-five thousand, two hundred fifty-three".