16065145 has 4 divisors (see below), whose sum is σ = 19278180. Its totient is φ = 12852112.

The previous prime is 16065131. The next prime is 16065149. The reversal of 16065145 is 54156061.

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 3083536 + 12981609 = 1756^2 + 3603^2 .

It is a cyclic number.

It is not a de Polignac number, because 16065145 - 2⁵ = 16065113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16065149) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1606510 + ... + 1606519.

It is an arithmetic number, because the mean of its divisors is an integer number (4819545).

Almost surely, 2^16065145 is an apocalyptic number.

It is an amenable number.

16065145 is a deficient number, since it is larger than the sum of its proper divisors (3213035).

16065145 is an equidigital number, since it uses as much as digits as its factorization.

16065145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213034.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 16065145 is about 4008.1348530208. The cubic root of 16065145 is about 252.3257367017.

The spelling of 16065145 in words is "sixteen million, sixty-five thousand, one hundred forty-five".