16020563 has 4 divisors (see below), whose sum is σ = 17252928. Its totient is φ = 14788200.

The previous prime is 16020559. The next prime is 16020569. The reversal of 16020563 is 36502061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36502061 = 59 ⋅618679.

It is a cyclic number.

It is not a de Polignac number, because 16020563 - 2² = 16020559 is a prime.

It is a super-4 number, since 4×16020563⁴ (a number of 30 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16020569) 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, 616163 + ... + 616188.

It is an arithmetic number, because the mean of its divisors is an integer number (4313232).

Almost surely, 2^16020563 is an apocalyptic number.

16020563 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16020563 is a deficient number, since it is larger than the sum of its proper divisors (1232365).

16020563 is a wasteful number, since it uses less digits than its factorization.

16020563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232364.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 16020563 is about 4002.5695496768. The cubic root of 16020563 is about 252.0921127527.

The spelling of 16020563 in words is "sixteen million, twenty thousand, five hundred sixty-three".