1105521550 has 24 divisors (see below), whose sum is σ = 2350023696. Its totient is φ = 379035840.

The previous prime is 1105521511. The next prime is 1105521551. The reversal of 1105521550 is 551255011.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105521551) 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, 1578967 + ... + 1579666.

It is an arithmetic number, because the mean of its divisors is an integer number (97917654).

Almost surely, 2^1105521550 is an apocalyptic number.

1105521550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1105521550 is an abundant number, since it is smaller than the sum of its proper divisors (1244502146).

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

1105521550 is a wasteful number, since it uses less digits than its factorization.

1105521550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158652 (or 3158647 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 25.

The square root of 1105521550 is about 33249.3842048240. The cubic root of 1105521550 is about 1034.0044414905.

Adding to 1105521550 its reverse (551255011), we get a palindrome (1656776561).

The spelling of 1105521550 in words is "one billion, one hundred five million, five hundred twenty-one thousand, five hundred fifty".