2005554 has 16 divisors (see below), whose sum is σ = 4185792. Its totient is φ = 639408.

The previous prime is 2005547. The next prime is 2005559. The reversal of 2005554 is 4555002.

It is a self number, because there is not a number n which added to its sum of digits gives 2005554.

It is not an unprimeable number, because it can be changed into a prime (2005559) by changing a digit.

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, 7129 + ... + 7404.

It is an arithmetic number, because the mean of its divisors is an integer number (261612).

2^2005554 is an apocalyptic number.

2005554 is an abundant number, since it is smaller than the sum of its proper divisors (2180238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2005554 is a wasteful number, since it uses less digits than its factorization.

2005554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14561.

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 2005554 is about 1416.1758365401. The cubic root of 2005554 is about 126.1086238901.

The spelling of 2005554 in words is "two million, five thousand, five hundred fifty-four".