1161045552 has 40 divisors (see below), whose sum is σ = 3016146240. Its totient is φ = 384850240.

The previous prime is 1161045547. The next prime is 1161045553. The reversal of 1161045552 is 2555401611.

It is not an unprimeable number, because it can be changed into a prime (1161045553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58974 + ... + 76157.

It is an arithmetic number, because the mean of its divisors is an integer number (75403656).

Almost surely, 2^1161045552 is an apocalyptic number.

1161045552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1161045552 is an abundant number, since it is smaller than the sum of its proper divisors (1855100688).

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

1161045552 is a wasteful number, since it uses less digits than its factorization.

1161045552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135321 (or 135315 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 1161045552 is about 34074.1185065733. The cubic root of 1161045552 is about 1051.0331635683.

The spelling of 1161045552 in words is "one billion, one hundred sixty-one million, forty-five thousand, five hundred fifty-two".