1090955 has 4 divisors (see below), whose sum is σ = 1309152. Its totient is φ = 872760.

The previous prime is 1090949. The next prime is 1090963. The reversal of 1090955 is 5590901.

1090955 = 176² + 177² + ... + 205².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5590901 = 113 ⋅49477.

It is not a de Polignac number, because 1090955 - 2⁴ = 1090939 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109091 + ... + 109100.

It is an arithmetic number, because the mean of its divisors is an integer number (327288).

2^1090955 is an apocalyptic number.

1090955 is a deficient number, since it is larger than the sum of its proper divisors (218197).

1090955 is an equidigital number, since it uses as much as digits as its factorization.

1090955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218196.

The product of its (nonzero) digits is 2025, while the sum is 29.

The square root of 1090955 is about 1044.4879128070. The cubic root of 1090955 is about 102.9442938792.

It can be divided in two parts, 10909 and 55, that multiplied together give a palindrome (599995).

The spelling of 1090955 in words is "one million, ninety thousand, nine hundred fifty-five".