1090155 has 16 divisors (see below), whose sum is σ = 1903104. Its totient is φ = 528480.

The previous prime is 1090153. The next prime is 1090169. The reversal of 1090155 is 5510901.

It is a happy number.

It is not a de Polignac number, because 1090155 - 2¹ = 1090153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1090151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3139 + ... + 3468.

It is an arithmetic number, because the mean of its divisors is an integer number (118944).

2^1090155 is an apocalyptic number.

1090155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1090155 is a deficient number, since it is larger than the sum of its proper divisors (812949).

1090155 is a wasteful number, since it uses less digits than its factorization.

1090155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6626.

The product of its (nonzero) digits is 225, while the sum is 21.

The square root of 1090155 is about 1044.1048797894. The cubic root of 1090155 is about 102.9191246242.

The spelling of 1090155 in words is "one million, ninety thousand, one hundred fifty-five".