16071145 has 4 divisors (see below), whose sum is σ = 19285380. Its totient is φ = 12856912.

The previous prime is 16071109. The next prime is 16071149. The reversal of 16071145 is 54117061.

It is a happy number.

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 4044121 + 12027024 = 2011^2 + 3468^2 .

It is a cyclic number.

It is not a de Polignac number, because 16071145 - 2¹⁷ = 15940073 is a prime.

It is a super-2 number, since 2×16071145² = 516563403222050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16071149) 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, 1607110 + ... + 1607119.

It is an arithmetic number, because the mean of its divisors is an integer number (4821345).

Almost surely, 2^16071145 is an apocalyptic number.

It is an amenable number.

16071145 is a deficient number, since it is larger than the sum of its proper divisors (3214235).

16071145 is an equidigital number, since it uses as much as digits as its factorization.

16071145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3214234.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 16071145 is about 4008.8832609593. The cubic root of 16071145 is about 252.3571456097.

The spelling of 16071145 in words is "sixteen million, seventy-one thousand, one hundred forty-five".