1995055 has 8 divisors (see below), whose sum is σ = 2476800. Its totient is φ = 1540896.

The previous prime is 1995031. The next prime is 1995061. The reversal of 1995055 is 5505991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1995055 - 2⁵ = 1995023 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1995055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6735 + ... + 7024.

It is an arithmetic number, because the mean of its divisors is an integer number (309600).

2^1995055 is an apocalyptic number.

1995055 is a deficient number, since it is larger than the sum of its proper divisors (481745).

1995055 is a wasteful number, since it uses less digits than its factorization.

1995055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13793.

The product of its (nonzero) digits is 10125, while the sum is 34.

The square root of 1995055 is about 1412.4641588373. The cubic root of 1995055 is about 125.8881807983. Note that the first 3 decimals are identical.

The spelling of 1995055 in words is "one million, nine hundred ninety-five thousand, fifty-five".