1144567 has 4 divisors (see below), whose sum is σ = 1160320. Its totient is φ = 1128816.

The previous prime is 1144537. The next prime is 1144573. The reversal of 1144567 is 7654411.

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

It is a cyclic number.

It is not a de Polignac number, because 1144567 - 2⁷ = 1144439 is a prime.

It is a Duffinian number.

1144567 is a lucky number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144537) 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, 7767 + ... + 7912.

It is an arithmetic number, because the mean of its divisors is an integer number (290080).

2^1144567 is an apocalyptic number.

1144567 is a deficient number, since it is larger than the sum of its proper divisors (15753).

1144567 is an equidigital number, since it uses as much as digits as its factorization.

1144567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15752.

The product of its digits is 3360, while the sum is 28.

The square root of 1144567 is about 1069.8443812069. The cubic root of 1144567 is about 104.6037064836.

Adding to 1144567 its reverse (7654411), we get a palindrome (8798978).

It can be divided in two parts, 1144 and 567, that added together give a triangular number (1711 = T₅₈).

The spelling of 1144567 in words is "one million, one hundred forty-four thousand, five hundred sixty-seven".