1151201155 has 24 divisors (see below), whose sum is σ = 1580391792. Its totient is φ = 800097792.

The previous prime is 1151201143. The next prime is 1151201179. The reversal of 1151201155 is 5511021511.

It is not a de Polignac number, because 1151201155 - 2¹³ = 1151192963 is a prime.

It is a Duffinian 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 23 ways as a sum of consecutive naturals, for example, 11857 + ... + 49426.

It is an arithmetic number, because the mean of its divisors is an integer number (65849658).

Almost surely, 2^1151201155 is an apocalyptic number.

1151201155 is a deficient number, since it is larger than the sum of its proper divisors (429190637).

1151201155 is a wasteful number, since it uses less digits than its factorization.

1151201155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61335 (or 61318 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 22.

The square root of 1151201155 is about 33929.3553578608. The cubic root of 1151201155 is about 1048.0541907544.

Adding to 1151201155 its reverse (5511021511), we get a palindrome (6662222666).

The spelling of 1151201155 in words is "one billion, one hundred fifty-one million, two hundred one thousand, one hundred fifty-five".