9920543 has 2 divisors, whose sum is σ = 9920544. Its totient is φ = 9920542.

The previous prime is 9920539. The next prime is 9920557. The reversal of 9920543 is 3450299.

9920543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9920543 - 2² = 9920539 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9920513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4960271 + 4960272.

It is an arithmetic number, because the mean of its divisors is an integer number (4960272).

Almost surely, 2^9920543 is an apocalyptic number.

9920543 is a deficient number, since it is larger than the sum of its proper divisors (1).

9920543 is an equidigital number, since it uses as much as digits as its factorization.

9920543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 9920543 is about 3149.6893497613. The cubic root of 9920543 is about 214.8713345902.

The spelling of 9920543 in words is "nine million, nine hundred twenty thousand, five hundred forty-three".