165501449 has 4 divisors (see below), whose sum is σ = 166033920. Its totient is φ = 164968980.

The previous prime is 165501389. The next prime is 165501499. The reversal of 165501449 is 944105561.

165501449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165501449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165501499) 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, 265769 + ... + 266390.

It is an arithmetic number, because the mean of its divisors is an integer number (41508480).

Almost surely, 2^165501449 is an apocalyptic number.

It is an amenable number.

165501449 is a deficient number, since it is larger than the sum of its proper divisors (532471).

165501449 is an equidigital number, since it uses as much as digits as its factorization.

165501449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532470.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 165501449 is about 12864.7366471296. The cubic root of 165501449 is about 549.0357197427.

The spelling of 165501449 in words is "one hundred sixty-five million, five hundred one thousand, four hundred forty-nine".