1550856 has 48 divisors (see below), whose sum is σ = 4114800. Its totient is φ = 487008.

The previous prime is 1550851. The next prime is 1550873. The reversal of 1550856 is 6580551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1550851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8575 + ... + 8753.

It is an arithmetic number, because the mean of its divisors is an integer number (85725).

2^1550856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1550856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2057400).

1550856 is an abundant number, since it is smaller than the sum of its proper divisors (2563944).

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

1550856 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (1550855) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (226).

1550856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 1550856 is about 1245.3336902212. Note that the first 3 decimals coincide. The cubic root of 1550856 is about 115.7507529802.

The spelling of 1550856 in words is "one million, five hundred fifty thousand, eight hundred fifty-six".