1101955 has 4 divisors (see below), whose sum is σ = 1322352. Its totient is φ = 881560.

The previous prime is 1101941. The next prime is 1101959. The reversal of 1101955 is 5591011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5591011 = 17 ⋅328883.

It is not a de Polignac number, because 1101955 - 2¹⁷ = 970883 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101959) 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 3 ways as a sum of consecutive naturals, for example, 110191 + ... + 110200.

It is an arithmetic number, because the mean of its divisors is an integer number (330588).

2^1101955 is an apocalyptic number.

1101955 is a deficient number, since it is larger than the sum of its proper divisors (220397).

1101955 is an equidigital number, since it uses as much as digits as its factorization.

1101955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220396.

The product of its (nonzero) digits is 225, while the sum is 22.

The square root of 1101955 is about 1049.7404441099. The cubic root of 1101955 is about 103.2891301283.

Adding to 1101955 its reverse (5591011), we get a palindrome (6692966).

The spelling of 1101955 in words is "one million, one hundred one thousand, nine hundred fifty-five".