1089155 has 8 divisors (see below), whose sum is σ = 1328784. Its totient is φ = 856800.

The previous prime is 1089133. The next prime is 1089161. The reversal of 1089155 is 5519801.

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

It is not a de Polignac number, because 1089155 - 2⁶ = 1089091 is a prime.

It is a super-2 number, since 2×1089155² = 2372517228050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1481 + ... + 2090.

It is an arithmetic number, because the mean of its divisors is an integer number (166098).

2^1089155 is an apocalyptic number.

1089155 is a deficient number, since it is larger than the sum of its proper divisors (239629).

1089155 is an equidigital number, since it uses as much as digits as its factorization.

1089155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3637.

The product of its (nonzero) digits is 1800, while the sum is 29.

The square root of 1089155 is about 1043.6258908249. The cubic root of 1089155 is about 102.8876457336.

The spelling of 1089155 in words is "one million, eighty-nine thousand, one hundred fifty-five".