978532543 has 2 divisors, whose sum is σ = 978532544. Its totient is φ = 978532542.

The previous prime is 978532531. The next prime is 978532559. The reversal of 978532543 is 345235879.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 978532543 - 2⁹ = 978532031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 978532493 and 978532502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (978532573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489266271 + 489266272.

It is an arithmetic number, because the mean of its divisors is an integer number (489266272).

Almost surely, 2^978532543 is an apocalyptic number.

978532543 is a deficient number, since it is larger than the sum of its proper divisors (1).

978532543 is an equidigital number, since it uses as much as digits as its factorization.

978532543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 46.

The square root of 978532543 is about 31281.5048071540. The cubic root of 978532543 is about 992.7923556760.

The spelling of 978532543 in words is "nine hundred seventy-eight million, five hundred thirty-two thousand, five hundred forty-three".