9981054523 has 4 divisors (see below), whose sum is σ = 10888423128. Its totient is φ = 9073685920.

The previous prime is 9981054491. The next prime is 9981054557. The reversal of 9981054523 is 3254501899.

9981054523 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3254501899 = 11 ⋅295863809.

It is a cyclic number.

It is not a de Polignac number, because 9981054523 - 2⁵ = 9981054491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9981054563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453684286 + ... + 453684307.

It is an arithmetic number, because the mean of its divisors is an integer number (2722105782).

Almost surely, 2^9981054523 is an apocalyptic number.

9981054523 is a deficient number, since it is larger than the sum of its proper divisors (907368605).

9981054523 is a wasteful number, since it uses less digits than its factorization.

9981054523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907368604.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 9981054523 is about 99905.2277060615. The cubic root of 9981054523 is about 2153.0732701490.

The spelling of 9981054523 in words is "nine billion, nine hundred eighty-one million, fifty-four thousand, five hundred twenty-three".