1103550 has 48 divisors (see below), whose sum is σ = 3130752. Its totient is φ = 252000.

The previous prime is 1103549. The next prime is 1103561. The reversal of 1103550 is 553011.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 525 + ... + 1575.

It is an arithmetic number, because the mean of its divisors is an integer number (65224).

2^1103550 is an apocalyptic number.

1103550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 1050×1051.

It is a practical number, because each smaller number is the sum of distinct divisors of 1103550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1565376).

1103550 is an abundant number, since it is smaller than the sum of its proper divisors (2027202).

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

1103550 is a wasteful number, since it uses less digits than its factorization.

1103550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073 (or 1068 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 15.

The square root of 1103550 is about 1050.4998810090. The cubic root of 1103550 is about 103.3389406137.

Adding to 1103550 its reverse (553011), we get a palindrome (1656561).

It can be divided in two parts, 1103 and 550, that added together give a triangular number (1653 = T₅₇).

The spelling of 1103550 in words is "one million, one hundred three thousand, five hundred fifty".