4472521 has 4 divisors (see below), whose sum is σ = 4478992. Its totient is φ = 4466052.

The previous prime is 4472509. The next prime is 4472527. The reversal of 4472521 is 1252744.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4472521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4472527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2055 + ... + 3628.

It is an arithmetic number, because the mean of its divisors is an integer number (1119748).

Almost surely, 2^4472521 is an apocalyptic number.

It is an amenable number.

4472521 is a deficient number, since it is larger than the sum of its proper divisors (6471).

4472521 is an equidigital number, since it uses as much as digits as its factorization.

4472521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6470.

The product of its digits is 2240, while the sum is 25.

The square root of 4472521 is about 2114.8335631912. The cubic root of 4472521 is about 164.7596255015.

The spelling of 4472521 in words is "four million, four hundred seventy-two thousand, five hundred twenty-one".