1556006 has 8 divisors (see below), whose sum is σ = 2357424. Its totient is φ = 770200.

The previous prime is 1556003. The next prime is 1556011. The reversal of 1556006 is 6006551.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1556003) by changing a digit.

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, 3650 + ... + 4053.

It is an arithmetic number, because the mean of its divisors is an integer number (294678).

2^1556006 is an apocalyptic number.

1556006 is a deficient number, since it is larger than the sum of its proper divisors (801418).

1556006 is a wasteful number, since it uses less digits than its factorization.

1556006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7806.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1556006 is about 1247.3996953663. The cubic root of 1556006 is about 115.8787377280.

It can be divided in two parts, 155 and 6006, that multiplied together give a triangular number (930930 = T₁₃₆₄).

The spelling of 1556006 in words is "one million, five hundred fifty-six thousand, six".