1800552 has 64 divisors (see below), whose sum is σ = 5040000. Its totient is φ = 532224.

The previous prime is 1800551. The next prime is 1800553. The reversal of 1800552 is 2550081.

It is an interprime number because it is at equal distance from previous prime (1800551) and next prime (1800553).

It is not an unprimeable number, because it can be changed into a prime (1800551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8949 + ... + 9147.

It is an arithmetic number, because the mean of its divisors is an integer number (78750).

2^1800552 is an apocalyptic number.

1800552 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 1800552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2520000).

1800552 is an abundant number, since it is smaller than the sum of its proper divisors (3239448).

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

1800552 is a wasteful number, since it uses less digits than its factorization.

1800552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1800552 is about 1341.8464889845. The cubic root of 1800552 is about 121.6564733647.

The spelling of 1800552 in words is "one million, eight hundred thousand, five hundred fifty-two".