1144041521 has 4 divisors (see below), whose sum is σ = 1307476032. Its totient is φ = 980607012.

The previous prime is 1144041499. The next prime is 1144041529. The reversal of 1144041521 is 1251404411.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1251404411 = 7489 ⋅167099.

It is a de Polignac number, because none of the positive numbers 2^k-1144041521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144041529) 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, 81717245 + ... + 81717258.

It is an arithmetic number, because the mean of its divisors is an integer number (326869008).

Almost surely, 2^1144041521 is an apocalyptic number.

It is an amenable number.

1144041521 is a deficient number, since it is larger than the sum of its proper divisors (163434511).

1144041521 is an equidigital number, since it uses as much as digits as its factorization.

1144041521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163434510.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 1144041521 is about 33823.6828420561. The cubic root of 1144041521 is about 1045.8769592668.

Adding to 1144041521 its reverse (1251404411), we get a palindrome (2395445932).

The spelling of 1144041521 in words is "one billion, one hundred forty-four million, forty-one thousand, five hundred twenty-one".