1806552 has 48 divisors (see below), whose sum is σ = 5339880. Its totient is φ = 547200.

The previous prime is 1806551. The next prime is 1806557. The reversal of 1806552 is 2556081.

1806552 is a `hidden beast` number, since 1 + 8 + 0 + 655 + 2 = 666.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1806551) 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, 349 + ... + 1932.

2^1806552 is an apocalyptic number.

1806552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1806552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2669940).

1806552 is an abundant number, since it is smaller than the sum of its proper divisors (3533328).

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

1806552 is a wasteful number, since it uses less digits than its factorization.

1806552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304 (or 2297 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1806552 is about 1344.0803547407. The cubic root of 1806552 is about 121.7914559595.

The spelling of 1806552 in words is "one million, eight hundred six thousand, five hundred fifty-two".