1143550 has 12 divisors (see below), whose sum is σ = 2127096. Its totient is φ = 457400.

The previous prime is 1143529. The next prime is 1143551. The reversal of 1143550 is 553411.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143551) 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 5 ways as a sum of consecutive naturals, for example, 11386 + ... + 11485.

It is an arithmetic number, because the mean of its divisors is an integer number (177258).

2^1143550 is an apocalyptic number.

1143550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1143550 is a deficient number, since it is larger than the sum of its proper divisors (983546).

1143550 is a wasteful number, since it uses less digits than its factorization.

1143550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22883 (or 22878 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 1143550 is about 1069.3689728059. The cubic root of 1143550 is about 104.5727155809.

Adding to 1143550 its reverse (553411), we get a palindrome (1696961).

The spelling of 1143550 in words is "one million, one hundred forty-three thousand, five hundred fifty".