1155105050 has 24 divisors (see below), whose sum is σ = 2343814272. Its totient is φ = 420038000.

The previous prime is 1155105037. The next prime is 1155105053. The reversal of 1155105050 is 505015511.

It is a happy number.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1155105053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1049546 + ... + 1050645.

It is an arithmetic number, because the mean of its divisors is an integer number (97658928).

Almost surely, 2^1155105050 is an apocalyptic number.

1155105050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1155105050 is an abundant number, since it is smaller than the sum of its proper divisors (1188709222).

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

1155105050 is a wasteful number, since it uses less digits than its factorization.

1155105050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100214 (or 2100209 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 23.

The square root of 1155105050 is about 33986.8364223562. The cubic root of 1155105050 is about 1049.2375568516.

The spelling of 1155105050 in words is "one billion, one hundred fifty-five million, one hundred five thousand, fifty".