1995554 has 16 divisors (see below), whose sum is σ = 3321216. Its totient is φ = 891600.

The previous prime is 1995547. The next prime is 1995583. The reversal of 1995554 is 4555991.

It is an Ulam number.

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 7 ways as a sum of consecutive naturals, for example, 599 + ... + 2085.

It is an arithmetic number, because the mean of its divisors is an integer number (207576).

2^1995554 is an apocalyptic number.

1995554 is a deficient number, since it is larger than the sum of its proper divisors (1325662).

1995554 is a wasteful number, since it uses less digits than its factorization.

1995554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561.

The product of its digits is 40500, while the sum is 38.

The square root of 1995554 is about 1412.6407894437. The cubic root of 1995554 is about 125.8986755743.

The spelling of 1995554 in words is "one million, nine hundred ninety-five thousand, five hundred fifty-four".