1155313550 has 12 divisors (see below), whose sum is σ = 2148883296. Its totient is φ = 462125400.

The previous prime is 1155313547. The next prime is 1155313573. The reversal of 1155313550 is 553135511.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

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 5 ways as a sum of consecutive naturals, for example, 11553086 + ... + 11553185.

It is an arithmetic number, because the mean of its divisors is an integer number (179073608).

Almost surely, 2^1155313550 is an apocalyptic number.

1155313550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1155313550 is a deficient number, since it is larger than the sum of its proper divisors (993569746).

1155313550 is a wasteful number, since it uses less digits than its factorization.

1155313550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23106283 (or 23106278 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 29.

The square root of 1155313550 is about 33989.9036479952. The cubic root of 1155313550 is about 1049.3006832513.

It can be divided in two parts, 1 and 155313550, that added together give a palindrome (155313551).

The spelling of 1155313550 in words is "one billion, one hundred fifty-five million, three hundred thirteen thousand, five hundred fifty".