117571445 has 4 divisors (see below), whose sum is σ = 141085740. Its totient is φ = 94057152.

The previous prime is 117571427. The next prime is 117571457. The reversal of 117571445 is 544175711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544175711 = 20359 ⋅26729.

It can be written as a sum of positive squares in 2 ways, for example, as 34269316 + 83302129 = 5854^2 + 9127^2 .

It is a cyclic number.

It is not a de Polignac number, because 117571445 - 2²⁰ = 116522869 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11757140 + ... + 11757149.

It is an arithmetic number, because the mean of its divisors is an integer number (35271435).

Almost surely, 2^117571445 is an apocalyptic number.

It is an amenable number.

117571445 is a deficient number, since it is larger than the sum of its proper divisors (23514295).

117571445 is an equidigital number, since it uses as much as digits as its factorization.

117571445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23514294.

The product of its digits is 19600, while the sum is 35.

The square root of 117571445 is about 10843.0367056466. The cubic root of 117571445 is about 489.8923059172.

The spelling of 117571445 in words is "one hundred seventeen million, five hundred seventy-one thousand, four hundred forty-five".