165352546 has 4 divisors (see below), whose sum is σ = 248028822. Its totient is φ = 82676272.

The previous prime is 165352531. The next prime is 165352643. The reversal of 165352546 is 645253561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 645253561 = 31 ⋅20814631.

It can be written as a sum of positive squares in only one way, i.e., 161569521 + 3783025 = 12711^2 + 1945^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 41338135 + ... + 41338138.

Almost surely, 2^165352546 is an apocalyptic number.

165352546 is a deficient number, since it is larger than the sum of its proper divisors (82676276).

165352546 is an equidigital number, since it uses as much as digits as its factorization.

165352546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82676275.

The product of its digits is 108000, while the sum is 37.

The square root of 165352546 is about 12858.9480907266. The cubic root of 165352546 is about 548.8710130357.

The spelling of 165352546 in words is "one hundred sixty-five million, three hundred fifty-two thousand, five hundred forty-six".