291152 has 20 divisors (see below), whose sum is σ = 583296. Its totient is φ = 140640.

The previous prime is 291143. The next prime is 291167. The reversal of 291152 is 251192.

291152 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203 + ... + 789.

2²⁹¹¹⁵² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 291152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291648).

291152 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

291152 is a wasteful number, since it uses less digits than its factorization.

291152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 620 counting only the distinct ones).

The product of its digits is 180, while the sum is 20.

The square root of 291152 is about 539.5850257374. The cubic root of 291152 is about 66.2785897727.

The spelling of 291152 in words is "two hundred ninety-one thousand, one hundred fifty-two".