1154553500 has 48 divisors (see below), whose sum is σ = 2528547840. Its totient is φ = 460539200.

The previous prime is 1154553443. The next prime is 1154553509. The reversal of 1154553500 is 53554511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154553509) by changing a digit.

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, 188486 + ... + 194514.

It is an arithmetic number, because the mean of its divisors is an integer number (52678080).

Almost surely, 2^1154553500 is an apocalyptic number.

1154553500 is a gapful number since it is divisible by the number (10) 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 1154553500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1264273920).

1154553500 is an abundant number, since it is smaller than the sum of its proper divisors (1373994340).

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

1154553500 is a wasteful number, since it uses less digits than its factorization.

1154553500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6431 (or 6419 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 1154553500 is about 33978.7212825910. The cubic root of 1154553500 is about 1049.0705304535.

The spelling of 1154553500 in words is "one billion, one hundred fifty-four million, five hundred fifty-three thousand, five hundred".