8545981 has 8 divisors (see below), whose sum is σ = 8901720. Its totient is φ = 8194368.

The previous prime is 8545967. The next prime is 8545993. The reversal of 8545981 is 1895458.

8545981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1071225 + 7474756 = 1035^2 + 2734^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 8545981 - 2⁹ = 8545469 is a prime.

It is a super-2 number, since 2×8545981² = 146067582504722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8545961) 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, 3615 + ... + 5491.

It is an arithmetic number, because the mean of its divisors is an integer number (1112715).

Almost surely, 2^8545981 is an apocalyptic number.

It is an amenable number.

8545981 is a deficient number, since it is larger than the sum of its proper divisors (355739).

8545981 is a wasteful number, since it uses less digits than its factorization.

8545981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063.

The product of its digits is 57600, while the sum is 40.

The square root of 8545981 is about 2923.3509881641. The cubic root of 8545981 is about 204.4500907410.

The spelling of 8545981 in words is "eight million, five hundred forty-five thousand, nine hundred eighty-one".