1153331550 has 144 divisors (see below), whose sum is σ = 3695477760. Its totient is φ = 252141120.

The previous prime is 1153331519. The next prime is 1153331579. The reversal of 1153331550 is 551333511.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 64491 + ... + 80409.

It is an arithmetic number, because the mean of its divisors is an integer number (25663040).

Almost surely, 2^1153331550 is an apocalyptic number.

1153331550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1153331550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1847738880).

1153331550 is an abundant number, since it is smaller than the sum of its proper divisors (2542146210).

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

1153331550 is a wasteful number, since it uses less digits than its factorization.

1153331550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15967 (or 15959 counting only the distinct ones).

The product of its (nonzero) digits is 3375, while the sum is 27.

The square root of 1153331550 is about 33960.7354160654. The cubic root of 1153331550 is about 1048.7002966363.

The spelling of 1153331550 in words is "one billion, one hundred fifty-three million, three hundred thirty-one thousand, five hundred fifty".