164544241 has 4 divisors (see below), whose sum is σ = 174223332. Its totient is φ = 154865152.

The previous prime is 164544209. The next prime is 164544257. The reversal of 164544241 is 142445461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 142445461 = 647 ⋅220163.

It can be written as a sum of positive squares in 2 ways, for example, as 90326016 + 74218225 = 9504^2 + 8615^2 .

It is a cyclic number.

It is not a de Polignac number, because 164544241 - 2⁵ = 164544209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164544271) 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, 4839520 + ... + 4839553.

It is an arithmetic number, because the mean of its divisors is an integer number (43555833).

Almost surely, 2^164544241 is an apocalyptic number.

It is an amenable number.

164544241 is a deficient number, since it is larger than the sum of its proper divisors (9679091).

164544241 is an equidigital number, since it uses as much as digits as its factorization.

164544241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9679090.

The product of its digits is 15360, while the sum is 31.

The square root of 164544241 is about 12827.4799161800. The cubic root of 164544241 is about 547.9751895724.

The spelling of 164544241 in words is "one hundred sixty-four million, five hundred forty-four thousand, two hundred forty-one".