1955583 has 20 divisors (see below), whose sum is σ = 3339600. Its totient is φ = 1117152.

The previous prime is 1955579. The next prime is 1955587. The reversal of 1955583 is 3855591.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1955579) and next prime (1955587).

It is not a de Polignac number, because 1955583 - 2² = 1955579 is a prime.

1955583 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1955587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1158 + ... + 2291.

It is an arithmetic number, because the mean of its divisors is an integer number (166980).

2^1955583 is an apocalyptic number.

1955583 is a deficient number, since it is larger than the sum of its proper divisors (1384017).

1955583 is an equidigital number, since it uses as much as digits as its factorization.

1955583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3468 (or 3459 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 1955583 is about 1398.4216102449. The cubic root of 1955583 is about 125.0524153513.

It can be divided in two parts, 195 and 5583, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 1955583 in words is "one million, nine hundred fifty-five thousand, five hundred eighty-three".