1155315250 has 16 divisors (see below), whose sum is σ = 2162750616. Its totient is φ = 462126000.

The previous prime is 1155315247. The next prime is 1155315251. The reversal of 1155315250 is 525135511.

1155315250 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 301682161 + 853633089 = 17369^2 + 29217^2 .

It is not an unprimeable number, because it can be changed into a prime (1155315251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2310381 + ... + 2310880.

Almost surely, 2^1155315250 is an apocalyptic number.

1155315250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1155315250 is a deficient number, since it is larger than the sum of its proper divisors (1007435366).

1155315250 is an equidigital number, since it uses as much as digits as its factorization.

1155315250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4621278 (or 4621268 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 1155315250 is about 33989.9286554120. The cubic root of 1155315250 is about 1049.3011979197.

The spelling of 1155315250 in words is "one billion, one hundred fifty-five million, three hundred fifteen thousand, two hundred fifty".