291025152 has 108 divisors (see below), whose sum is σ = 915458544. Its totient is φ = 88181760.

The previous prime is 291025139. The next prime is 291025171. The reversal of 291025152 is 251520192.

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, 19603 + ... + 31085.

It is an arithmetic number, because the mean of its divisors is an integer number (8476468).

Almost surely, 2^291025152 is an apocalyptic number.

291025152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 291025152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (457729272).

291025152 is an abundant number, since it is smaller than the sum of its proper divisors (624433392).

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

291025152 is a wasteful number, since it uses less digits than its factorization.

291025152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11516 (or 11499 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 291025152 is about 17059.4593114788. The cubic root of 291025152 is about 662.6896303962.

The spelling of 291025152 in words is "two hundred ninety-one million, twenty-five thousand, one hundred fifty-two".