117541565 has 16 divisors (see below), whose sum is σ = 143544960. Its totient is φ = 92379840.

The previous prime is 117541561. The next prime is 117541573. The reversal of 117541565 is 565145711.

It is not a de Polignac number, because 117541565 - 2² = 117541561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117541561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165431 + ... + 166139.

It is an arithmetic number, because the mean of its divisors is an integer number (8971560).

Almost surely, 2^117541565 is an apocalyptic number.

It is an amenable number.

117541565 is a deficient number, since it is larger than the sum of its proper divisors (26003395).

117541565 is an equidigital number, since it uses as much as digits as its factorization.

117541565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252.

The product of its digits is 21000, while the sum is 35.

The square root of 117541565 is about 10841.6587752982. The cubic root of 117541565 is about 489.8508014450.

The spelling of 117541565 in words is "one hundred seventeen million, five hundred forty-one thousand, five hundred sixty-five".