115563533 has 4 divisors (see below), whose sum is σ = 115634688. Its totient is φ = 115492380.

The previous prime is 115563527. The next prime is 115563541. The reversal of 115563533 is 335365511.

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.

It is a cyclic number.

It is not a de Polignac number, because 115563533 - 2⁴ = 115563517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115563533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115563593) 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, 33083 + ... + 36408.

It is an arithmetic number, because the mean of its divisors is an integer number (28908672).

Almost surely, 2^115563533 is an apocalyptic number.

It is an amenable number.

115563533 is a deficient number, since it is larger than the sum of its proper divisors (71155).

115563533 is an equidigital number, since it uses as much as digits as its factorization.

115563533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71154.

The product of its digits is 20250, while the sum is 32.

The square root of 115563533 is about 10750.0480464043. The cubic root of 115563533 is about 487.0874465426.

The spelling of 115563533 in words is "one hundred fifteen million, five hundred sixty-three thousand, five hundred thirty-three".