4500081 has 6 divisors (see below), whose sum is σ = 6500130. Its totient is φ = 3000048.

The previous prime is 4500061. The next prime is 4500103. The reversal of 4500081 is 1800054.

It can be written as a sum of positive squares in only one way, i.e., 3549456 + 950625 = 1884^2 + 975^2 .

It is not a de Polignac number, because 4500081 - 2⁵ = 4500049 is a prime.

It is a super-2 number, since 2×4500081² = 40501458013122, which contains 22 as substring.

4500081 is a modest number, since divided by 81 gives 45 as remainder.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4500061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 249996 + ... + 250013.

It is an arithmetic number, because the mean of its divisors is an integer number (1083355).

Almost surely, 2^4500081 is an apocalyptic number.

It is an amenable number.

4500081 is a deficient number, since it is larger than the sum of its proper divisors (2000049).

4500081 is a wasteful number, since it uses less digits than its factorization.

4500081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500015 (or 500012 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 4500081 is about 2121.3394353568. The cubic root of 4500081 is about 165.0973530170.

The spelling of 4500081 in words is "four million, five hundred thousand, eighty-one".