4504921 has 2 divisors, whose sum is σ = 4504922. Its totient is φ = 4504920.

The previous prime is 4504901. The next prime is 4504931. The reversal of 4504921 is 1294054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3763600 + 741321 = 1940^2 + 861^2 .

It is a cyclic number.

It is not a de Polignac number, because 4504921 - 2¹¹ = 4502873 is a prime.

It is a super-3 number, since 3×4504921³ (a number of 21 digits) contains 333 as substring.

4504921 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (4504901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2252460 + 2252461.

It is an arithmetic number, because the mean of its divisors is an integer number (2252461).

Almost surely, 2^4504921 is an apocalyptic number.

It is an amenable number.

4504921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4504921 is an equidigital number, since it uses as much as digits as its factorization.

4504921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 4504921 is about 2122.4799174551. The cubic root of 4504921 is about 165.1565212025.

Adding to 4504921 its reverse (1294054), we get a palindrome (5798975).

The spelling of 4504921 in words is "four million, five hundred four thousand, nine hundred twenty-one".