1151255155 has 8 divisors (see below), whose sum is σ = 1381730832. Its totient is φ = 920854368.

The previous prime is 1151255143. The next prime is 1151255159. The reversal of 1151255155 is 5515521511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1151255155 - 2¹³ = 1151246963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151255159) 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, 23944 + ... + 53626.

It is an arithmetic number, because the mean of its divisors is an integer number (172716354).

Almost surely, 2^1151255155 is an apocalyptic number.

1151255155 is a deficient number, since it is larger than the sum of its proper divisors (230475677).

1151255155 is an equidigital number, since it uses as much as digits as its factorization.

1151255155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37445.

The product of its digits is 6250, while the sum is 31.

The square root of 1151255155 is about 33930.1511196163. The cubic root of 1151255155 is about 1048.0705777085.

Adding to 1151255155 its reverse (5515521511), we get a palindrome (6666776666).

The spelling of 1151255155 in words is "one billion, one hundred fifty-one million, two hundred fifty-five thousand, one hundred fifty-five".