4521549 has 4 divisors (see below), whose sum is σ = 6028736. Its totient is φ = 3014364.

The previous prime is 4521533. The next prime is 4521551. The reversal of 4521549 is 9451254.

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 not a de Polignac number, because 4521549 - 2⁴ = 4521533 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4521509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753589 + ... + 753594.

It is an arithmetic number, because the mean of its divisors is an integer number (1507184).

Almost surely, 2^4521549 is an apocalyptic number.

It is an amenable number.

4521549 is a deficient number, since it is larger than the sum of its proper divisors (1507187).

4521549 is a wasteful number, since it uses less digits than its factorization.

4521549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507186.

The product of its digits is 7200, while the sum is 30.

The square root of 4521549 is about 2126.3934254977. The cubic root of 4521549 is about 165.3594733896.

The spelling of 4521549 in words is "four million, five hundred twenty-one thousand, five hundred forty-nine".