1145554500 has 96 divisors (see below), whose sum is σ = 3407040000. Its totient is φ = 298963200.

The previous prime is 1145554499. The next prime is 1145554507. The reversal of 1145554500 is 54555411.

It is a super-2 number, since 2×1145554500² = 2624590224940500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1145554507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62376 + ... + 78624.

It is an arithmetic number, because the mean of its divisors is an integer number (35490000).

Almost surely, 2^1145554500 is an apocalyptic number.

1145554500 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 1145554500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1703520000).

1145554500 is an abundant number, since it is smaller than the sum of its proper divisors (2261485500).

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

1145554500 is a wasteful number, since it uses less digits than its factorization.

1145554500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16318 (or 16306 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 1145554500 is about 33846.0411274347. The cubic root of 1145554500 is about 1046.3378087483.

The spelling of 1145554500 in words is "one billion, one hundred forty-five million, five hundred fifty-four thousand, five hundred".