4502021 has 2 divisors, whose sum is σ = 4502022. Its totient is φ = 4502020.

The previous prime is 4502011. The next prime is 4502051. The reversal of 4502021 is 1202054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3422500 + 1079521 = 1850^2 + 1039^2 .

It is a cyclic number.

It is not a de Polignac number, because 4502021 - 2¹⁸ = 4239877 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 4501987 and 4502005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4502011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2251010 + 2251011.

It is an arithmetic number, because the mean of its divisors is an integer number (2251011).

Almost surely, 2^4502021 is an apocalyptic number.

It is an amenable number.

4502021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4502021 is an equidigital number, since it uses as much as digits as its factorization.

4502021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 4502021 is about 2121.7966443559. The cubic root of 4502021 is about 165.1210742826.

Adding to 4502021 its reverse (1202054), we get a palindrome (5704075).

The spelling of 4502021 in words is "four million, five hundred two thousand, twenty-one".