164532085 has 4 divisors (see below), whose sum is σ = 197438508. Its totient is φ = 131625664.

The previous prime is 164532083. The next prime is 164532091. The reversal of 164532085 is 580235461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 113252164 + 51279921 = 10642^2 + 7161^2 .

It is a cyclic number.

It is not a de Polignac number, because 164532085 - 2¹ = 164532083 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 164532085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164532083) by changing a digit.

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, 16453204 + ... + 16453213.

It is an arithmetic number, because the mean of its divisors is an integer number (49359627).

Almost surely, 2^164532085 is an apocalyptic number.

It is an amenable number.

164532085 is a deficient number, since it is larger than the sum of its proper divisors (32906423).

164532085 is an equidigital number, since it uses as much as digits as its factorization.

164532085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32906422.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 164532085 is about 12827.0060809216. The cubic root of 164532085 is about 547.9616950244.

The spelling of 164532085 in words is "one hundred sixty-four million, five hundred thirty-two thousand, eighty-five".