1153221560 has 16 divisors (see below), whose sum is σ = 2594748600. Its totient is φ = 461288608.

The previous prime is 1153221551. The next prime is 1153221581. The reversal of 1153221560 is 651223511.

It is a congruent number.

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, 14415230 + ... + 14415309.

Almost surely, 2^1153221560 is an apocalyptic number.

1153221560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1153221560 is an abundant number, since it is smaller than the sum of its proper divisors (1441527040).

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

1153221560 is a wasteful number, since it uses less digits than its factorization.

1153221560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28830550 (or 28830546 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1153221560 is about 33959.1160073404. The cubic root of 1153221560 is about 1048.6669583731. Note that the first 3 decimals are identical.

The spelling of 1153221560 in words is "one billion, one hundred fifty-three million, two hundred twenty-one thousand, five hundred sixty".