2012558 has 4 divisors (see below), whose sum is σ = 3018840. Its totient is φ = 1006278.

The previous prime is 2012533. The next prime is 2012597. The reversal of 2012558 is 8552102.

It is a semiprime because it is the product of two primes.

It is an Ulam number.

It is a partition number, being equal to the number of ways a set of 65 identical objects can be partitioned into subset.

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 as a sum of consecutive naturals, namely, 503138 + ... + 503141.

It is an arithmetic number, because the mean of its divisors is an integer number (754710).

2^2012558 is an apocalyptic number.

2012558 is a deficient number, since it is larger than the sum of its proper divisors (1006282).

2012558 is a wasteful number, since it uses less digits than its factorization.

2012558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006281.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 2012558 is about 1418.6465380778. The cubic root of 2012558 is about 126.2552564553.

The spelling of 2012558 in words is "two million, twelve thousand, five hundred fifty-eight".