1144561 has 8 divisors (see below), whose sum is σ = 1268064. Its totient is φ = 1024320.

The previous prime is 1144537. The next prime is 1144573. The reversal of 1144561 is 1654411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1144561 - 2⁵ = 1144529 is a prime.

It is a Duffinian 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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40 + ... + 1513.

It is an arithmetic number, because the mean of its divisors is an integer number (158508).

2^1144561 is an apocalyptic number.

1144561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1144561 is a deficient number, since it is larger than the sum of its proper divisors (123503).

1144561 is a wasteful number, since it uses less digits than its factorization.

1144561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631.

The product of its digits is 480, while the sum is 22.

The square root of 1144561 is about 1069.8415770571. The cubic root of 1144561 is about 104.6035237002.

Adding to 1144561 its reverse (1654411), we get a palindrome (2798972).

The spelling of 1144561 in words is "one million, one hundred forty-four thousand, five hundred sixty-one".