1089543 has 24 divisors (see below), whose sum is σ = 1803648. Its totient is φ = 572832.

The previous prime is 1089523. The next prime is 1089551. The reversal of 1089543 is 3459801.

1089543 = T₁₀₇ + T₁₀₈ + ... + T₁₉₇.

It is not a de Polignac number, because 1089543 - 2¹⁰ = 1088519 is a prime.

1089543 is a lucky number.

It is a zygodrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 1089543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3396 + ... + 3702.

It is an arithmetic number, because the mean of its divisors is an integer number (75152).

2^1089543 is an apocalyptic number.

1089543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1089543 is a deficient number, since it is larger than the sum of its proper divisors (714105).

1089543 is a wasteful number, since it uses less digits than its factorization.

1089543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1089543 is about 1043.8117646396. The cubic root of 1089543 is about 102.8998618299.

The spelling of 1089543 in words is "one million, eighty-nine thousand, five hundred forty-three".