1055889 has 8 divisors (see below), whose sum is σ = 1564320. Its totient is φ = 703908.

The previous prime is 1055881. The next prime is 1055893. The reversal of 1055889 is 9885501.

It is not a de Polignac number, because 1055889 - 2³ = 1055881 is a prime.

It is a super-2 number, since 2×1055889² = 2229803160642, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1055881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19527 + ... + 19580.

It is an arithmetic number, because the mean of its divisors is an integer number (195540).

2^1055889 is an apocalyptic number.

It is an amenable number.

1055889 is a deficient number, since it is larger than the sum of its proper divisors (508431).

1055889 is an equidigital number, since it uses as much as digits as its factorization.

1055889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39116 (or 39110 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The square root of 1055889 is about 1027.5645965096. The cubic root of 1055889 is about 101.8292992605.

The spelling of 1055889 in words is "one million, fifty-five thousand, eight hundred eighty-nine".