16045549 has 8 divisors (see below), whose sum is σ = 17328920. Its totient is φ = 14769216.

The previous prime is 16045537. The next prime is 16045553. The reversal of 16045549 is 94554061.

It can be written as a sum of positive squares in 4 ways, for example, as 189225 + 15856324 = 435^2 + 3982^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16045549 - 2⁵ = 16045517 is a prime.

It is a super-2 number, since 2×16045549² = 514919285422802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16045529) 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, 3607 + ... + 6715.

It is an arithmetic number, because the mean of its divisors is an integer number (2166115).

Almost surely, 2^16045549 is an apocalyptic number.

It is an amenable number.

16045549 is a deficient number, since it is larger than the sum of its proper divisors (1283371).

16045549 is a wasteful number, since it uses less digits than its factorization.

16045549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3519.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 16045549 is about 4005.6895785869. The cubic root of 16045549 is about 252.2231006961.

The spelling of 16045549 in words is "sixteen million, forty-five thousand, five hundred forty-nine".