4473521 has 4 divisors (see below), whose sum is σ = 4817652. Its totient is φ = 4129392.

The previous prime is 4473503. The next prime is 4473541. The reversal of 4473521 is 1253744.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2190400 + 2283121 = 1480^2 + 1511^2 .

It is a cyclic number.

It is not a de Polignac number, because 4473521 - 2⁶ = 4473457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4473541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172046 + ... + 172071.

It is an arithmetic number, because the mean of its divisors is an integer number (1204413).

Almost surely, 2^4473521 is an apocalyptic number.

It is an amenable number.

4473521 is a deficient number, since it is larger than the sum of its proper divisors (344131).

4473521 is a wasteful number, since it uses less digits than its factorization.

4473521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344130.

The product of its digits is 3360, while the sum is 26.

The square root of 4473521 is about 2115.0699752018. The cubic root of 4473521 is about 164.7719039867.

It can be divided in two parts, 4473 and 521, that added together give a palindrome (4994).

The spelling of 4473521 in words is "four million, four hundred seventy-three thousand, five hundred twenty-one".