4540981 has 8 divisors (see below), whose sum is σ = 4808000. Its totient is φ = 4276800.

The previous prime is 4540979. The next prime is 4540993. The reversal of 4540981 is 1890454.

It is a happy number.

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 4540981 - 2¹ = 4540979 is a prime.

It is a super-2 number, since 2×4540981² = 41241016884722, 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 (4540181) 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, 3181 + ... + 4381.

It is an arithmetic number, because the mean of its divisors is an integer number (601000).

Almost surely, 2^4540981 is an apocalyptic number.

It is an amenable number.

4540981 is a deficient number, since it is larger than the sum of its proper divisors (267019).

4540981 is a wasteful number, since it uses less digits than its factorization.

4540981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 4540981 is about 2130.9577658884. The cubic root of 4540981 is about 165.5960201343.

The spelling of 4540981 in words is "four million, five hundred forty thousand, nine hundred eighty-one".