1089554 has 16 divisors (see below), whose sum is σ = 1703808. Its totient is φ = 522192.

The previous prime is 1089551. The next prime is 1089563. The reversal of 1089554 is 4559801.

It is a self number, because there is not a number n which added to its sum of digits gives 1089554.

It is not an unprimeable number, because it can be changed into a prime (1089551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6212 + ... + 6384.

It is an arithmetic number, because the mean of its divisors is an integer number (106488).

2^1089554 is an apocalyptic number.

1089554 is a deficient number, since it is larger than the sum of its proper divisors (614254).

1089554 is a wasteful number, since it uses less digits than its factorization.

1089554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 1089554 is about 1043.8170337756. The cubic root of 1089554 is about 102.9002081202.

It can be divided in two parts, 1089 and 554, that multiplied together give a palindrome (603306).

The spelling of 1089554 in words is "one million, eighty-nine thousand, five hundred fifty-four".