1283550 has 48 divisors (see below), whose sum is σ = 3273600. Its totient is φ = 332640.

The previous prime is 1283549. The next prime is 1283563. The reversal of 1283550 is 553821.

It is a self number, because there is not a number n which added to its sum of digits gives 1283550.

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 in 23 ways as a sum of consecutive naturals, for example, 6351 + ... + 6549.

It is an arithmetic number, because the mean of its divisors is an integer number (68200).

2^1283550 is an apocalyptic number.

1283550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1283550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1636800).

1283550 is an abundant number, since it is smaller than the sum of its proper divisors (1990050).

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

1283550 is a wasteful number, since it uses less digits than its factorization.

1283550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1283550 is about 1132.9386567683. The cubic root of 1283550 is about 108.6769889116.

The spelling of 1283550 in words is "one million, two hundred eighty-three thousand, five hundred fifty".