16530945 has 8 divisors (see below), whose sum is σ = 26449536. Its totient is φ = 8816496.

The previous prime is 16530937. The next prime is 16530947. The reversal of 16530945 is 54903561.

It is a happy number.

16530945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16530945 - 2³ = 16530937 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16530947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551017 + ... + 551046.

It is an arithmetic number, because the mean of its divisors is an integer number (3306192).

Almost surely, 2^16530945 is an apocalyptic number.

16530945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16530945 is a deficient number, since it is larger than the sum of its proper divisors (9918591).

16530945 is a wasteful number, since it uses less digits than its factorization.

16530945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102071.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 16530945 is about 4065.8264842465. The cubic root of 16530945 is about 254.7412215205.

The spelling of 16530945 in words is "sixteen million, five hundred thirty thousand, nine hundred forty-five".