4530021 has 12 divisors (see below), whose sum is σ = 6213312. Its totient is φ = 2935728.

The previous prime is 4530017. The next prime is 4530023. The reversal of 4530021 is 1200354.

It is not a de Polignac number, because 4530021 - 2² = 4530017 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4530023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3556 + ... + 4658.

It is an arithmetic number, because the mean of its divisors is an integer number (517776).

Almost surely, 2^4530021 is an apocalyptic number.

It is an amenable number.

4530021 is a deficient number, since it is larger than the sum of its proper divisors (1683291).

4530021 is a wasteful number, since it uses less digits than its factorization.

4530021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180 (or 1143 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 4530021 is about 2128.3845987039. The cubic root of 4530021 is about 165.4626866468.

Adding to 4530021 its reverse (1200354), we get a palindrome (5730375).

The spelling of 4530021 in words is "four million, five hundred thirty thousand, twenty-one".