1144551 has 12 divisors (see below), whose sum is σ = 1580856. Its totient is φ = 736560.

The previous prime is 1144537. The next prime is 1144573. The reversal of 1144551 is 1554411.

It is not a de Polignac number, because 1144551 - 2⁵ = 1144519 is a prime.

1144551 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144511) 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 11 ways as a sum of consecutive naturals, for example, 2685 + ... + 3081.

It is an arithmetic number, because the mean of its divisors is an integer number (131738).

2^1144551 is an apocalyptic number.

1144551 is a deficient number, since it is larger than the sum of its proper divisors (436305).

1144551 is an equidigital number, since it uses as much as digits as its factorization.

1144551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 431 counting only the distinct ones).

The product of its digits is 400, while the sum is 21.

The square root of 1144551 is about 1069.8369034577. The cubic root of 1144551 is about 104.6032190599.

Adding to 1144551 its reverse (1554411), we get a palindrome (2698962).

The spelling of 1144551 in words is "one million, one hundred forty-four thousand, five hundred fifty-one".