4144521 has 4 divisors (see below), whose sum is σ = 5526032. Its totient is φ = 2763012.

The previous prime is 4144487. The next prime is 4144537. The reversal of 4144521 is 1254414.

It is a happy number.

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 4144521 - 2⁶ = 4144457 is a prime.

It is a D-number.

It is a Duffinian number.

4144521 is a lucky number.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (4144541) 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, 690751 + ... + 690756.

It is an arithmetic number, because the mean of its divisors is an integer number (1381508).

Almost surely, 2^4144521 is an apocalyptic number.

It is an amenable number.

4144521 is a deficient number, since it is larger than the sum of its proper divisors (1381511).

4144521 is a wasteful number, since it uses less digits than its factorization.

4144521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381510.

The product of its digits is 640, while the sum is 21.

The square root of 4144521 is about 2035.8096669384. The cubic root of 4144521 is about 160.6293054507.

Adding to 4144521 its reverse (1254414), we get a palindrome (5398935).

The spelling of 4144521 in words is "four million, one hundred forty-four thousand, five hundred twenty-one".