1144571 has 4 divisors (see below), whose sum is σ = 1149600. Its totient is φ = 1139544.

The previous prime is 1144537. The next prime is 1144573. The reversal of 1144571 is 1754411.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1144571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144573) 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, 2156 + ... + 2633.

It is an arithmetic number, because the mean of its divisors is an integer number (287400).

2^1144571 is an apocalyptic number.

1144571 is a deficient number, since it is larger than the sum of its proper divisors (5029).

1144571 is an equidigital number, since it uses as much as digits as its factorization.

1144571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5028.

The product of its digits is 560, while the sum is 23.

The square root of 1144571 is about 1069.8462506360. The cubic root of 1144571 is about 104.6038283388.

Adding to 1144571 its reverse (1754411), we get a palindrome (2898982).

The spelling of 1144571 in words is "one million, one hundred forty-four thousand, five hundred seventy-one".