1153305520 has 20 divisors (see below), whose sum is σ = 2681435520. Its totient is φ = 461322176.

The previous prime is 1153305511. The next prime is 1153305539. The reversal of 1153305520 is 255033511.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×1153305520² = 2660227244924940800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7208080 + ... + 7208239.

It is an arithmetic number, because the mean of its divisors is an integer number (134071776).

Almost surely, 2^1153305520 is an apocalyptic number.

1153305520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1153305520 is an abundant number, since it is smaller than the sum of its proper divisors (1528130000).

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

1153305520 is a wasteful number, since it uses less digits than its factorization.

1153305520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14416332 (or 14416326 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 1153305520 is about 33960.3521772081. The cubic root of 1153305520 is about 1048.6924070651.

The spelling of 1153305520 in words is "one billion, one hundred fifty-three million, three hundred five thousand, five hundred twenty".