20532543 has 8 divisors (see below), whose sum is σ = 28013568. Its totient is φ = 13369944.

The previous prime is 20532517. The next prime is 20532569. The reversal of 20532543 is 34523502.

It is an interprime number because it is at equal distance from previous prime (20532517) and next prime (20532569).

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

It is not a de Polignac number, because 20532543 - 2⁵ = 20532511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20532143) 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, 79455 + ... + 79712.

It is an arithmetic number, because the mean of its divisors is an integer number (3501696).

Almost surely, 2^20532543 is an apocalyptic number.

20532543 is a deficient number, since it is larger than the sum of its proper divisors (7481025).

20532543 is a wasteful number, since it uses less digits than its factorization.

20532543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159213.

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 20532543 is about 4531.2849171068. The cubic root of 20532543 is about 273.8299289131.

The spelling of 20532543 in words is "twenty million, five hundred thirty-two thousand, five hundred forty-three".