1151555112 has 48 divisors (see below), whose sum is σ = 3302257140. Its totient is φ = 361271808.

The previous prime is 1151555081. The next prime is 1151555147. The reversal of 1151555112 is 2115551511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 995654916 + 155900196 = 31554^2 + 12486^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 469183 + ... + 471630.

Almost surely, 2^1151555112 is an apocalyptic number.

1151555112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1151555112 is an abundant number, since it is smaller than the sum of its proper divisors (2150702028).

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

1151555112 is a wasteful number, since it uses less digits than its factorization.

1151555112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940842 (or 940835 counting only the distinct ones).

The product of its digits is 1250, while the sum is 27.

The square root of 1151555112 is about 33934.5710448799. The cubic root of 1151555112 is about 1048.1615939660.

The spelling of 1151555112 in words is "one billion, one hundred fifty-one million, five hundred fifty-five thousand, one hundred twelve".