1955105 has 4 divisors (see below), whose sum is σ = 2346132. Its totient is φ = 1564080.

The previous prime is 1955099. The next prime is 1955113. The reversal of 1955105 is 5015591.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 937024 + 1018081 = 968^2 + 1009^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1955105 is a prime.

It is a super-2 number, since 2×1955105² = 7644871122050, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 11.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195506 + ... + 195515.

It is an arithmetic number, because the mean of its divisors is an integer number (586533).

2^1955105 is an apocalyptic number.

It is an amenable number.

1955105 is a deficient number, since it is larger than the sum of its proper divisors (391027).

1955105 is an equidigital number, since it uses as much as digits as its factorization.

1955105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391026.

The product of its (nonzero) digits is 1125, while the sum is 26.

The square root of 1955105 is about 1398.2506928302. The cubic root of 1955105 is about 125.0422257343.

The spelling of 1955105 in words is "one million, nine hundred fifty-five thousand, one hundred five".