1153145550 has 24 divisors (see below), whose sum is σ = 2859801336. Its totient is φ = 307505440.

The previous prime is 1153145519. The next prime is 1153145551. The reversal of 1153145550 is 555413511.

1153145550 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153145551) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3843669 + ... + 3843968.

It is an arithmetic number, because the mean of its divisors is an integer number (119158389).

Almost surely, 2^1153145550 is an apocalyptic number.

1153145550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1153145550 is an abundant number, since it is smaller than the sum of its proper divisors (1706655786).

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

1153145550 is a wasteful number, since it uses less digits than its factorization.

1153145550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7687652 (or 7687647 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 1153145550 is about 33957.9968490487. The cubic root of 1153145550 is about 1048.6439183000.

The spelling of 1153145550 in words is "one billion, one hundred fifty-three million, one hundred forty-five thousand, five hundred fifty".