1155224520 has 48 divisors (see below), whose sum is σ = 3754480860. Its totient is φ = 308059776.

The previous prime is 1155224501. The next prime is 1155224533. The reversal of 1155224520 is 254225511.

1155224520 is a `hidden beast` number, since 115 + 5 + 2 + 24 + 520 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1122116004 + 33108516 = 33498^2 + 5754^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1604119 + ... + 1604838.

Almost surely, 2^1155224520 is an apocalyptic number.

1155224520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155224520 is an abundant number, since it is smaller than the sum of its proper divisors (2599256340).

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

1155224520 is a wasteful number, since it uses less digits than its factorization.

1155224520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208974 (or 3208967 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1155224520 is about 33988.5939691538. The cubic root of 1155224520 is about 1049.2737290565.

Subtracting from 1155224520 its reverse (254225511), we obtain a palindrome (900999009).

The spelling of 1155224520 in words is "one billion, one hundred fifty-five million, two hundred twenty-four thousand, five hundred twenty".