1155303450 has 144 divisors (see below), whose sum is σ = 3669943680. Its totient is φ = 254943360.

The previous prime is 1155303449. The next prime is 1155303467. The reversal of 1155303450 is 543035511.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 85027 + ... + 97673.

It is an arithmetic number, because the mean of its divisors is an integer number (25485720).

Almost surely, 2^1155303450 is an apocalyptic number.

1155303450 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 1155303450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1834971840).

1155303450 is an abundant number, since it is smaller than the sum of its proper divisors (2514640230).

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

1155303450 is a wasteful number, since it uses less digits than its factorization.

1155303450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12701 (or 12693 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1155303450 is about 33989.7550741396. The cubic root of 1155303450 is about 1049.2976255048.

Adding to 1155303450 its reverse (543035511), we get a palindrome (1698338961).

The spelling of 1155303450 in words is "one billion, one hundred fifty-five million, three hundred three thousand, four hundred fifty".