1995505 has 4 divisors (see below), whose sum is σ = 2394612. Its totient is φ = 1596400.

The previous prime is 1995481. The next prime is 1995517. The reversal of 1995505 is 5055991.

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 1361889 + 633616 = 1167^2 + 796^2 .

It is not a de Polignac number, because 1995505 - 2⁵ = 1995473 is a prime.

It is a Duffinian number.

1995505 is a lucky 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 3 ways as a sum of consecutive naturals, for example, 199546 + ... + 199555.

It is an arithmetic number, because the mean of its divisors is an integer number (598653).

2^1995505 is an apocalyptic number.

It is an amenable number.

1995505 is a deficient number, since it is larger than the sum of its proper divisors (399107).

1995505 is an equidigital number, since it uses as much as digits as its factorization.

1995505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399106.

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

The square root of 1995505 is about 1412.6234459331. The cubic root of 1995505 is about 125.8976451026.

It can be divided in two parts, 1995 and 505, that added together give a square (2500 = 50²).

The spelling of 1995505 in words is "one million, nine hundred ninety-five thousand, five hundred five".