1101405552 has 80 divisors (see below), whose sum is σ = 3068866080. Its totient is φ = 338374656.

The previous prime is 1101405533. The next prime is 1101405583. The reversal of 1101405552 is 2555041011.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 15 ways as a sum of consecutive naturals, for example, 683724 + ... + 685332.

It is an arithmetic number, because the mean of its divisors is an integer number (38360826).

Almost surely, 2^1101405552 is an apocalyptic number.

1101405552 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 1101405552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1534433040).

1101405552 is an abundant number, since it is smaller than the sum of its proper divisors (1967460528).

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

1101405552 is a wasteful number, since it uses less digits than its factorization.

1101405552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2730 (or 2724 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 1101405552 is about 33187.4306326959. The cubic root of 1101405552 is about 1032.7196020730.

Adding to 1101405552 its reverse (2555041011), we get a palindrome (3656446563).

The spelling of 1101405552 in words is "one billion, one hundred one million, four hundred five thousand, five hundred fifty-two".