581158152 has 80 divisors (see below), whose sum is σ = 1631931840. Its totient is φ = 193225824.

The previous prime is 581158133. The next prime is 581158159. The reversal of 581158152 is 251851185.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (581158159) 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 19 ways as a sum of consecutive naturals, for example, 325053 + ... + 326835.

It is an arithmetic number, because the mean of its divisors is an integer number (20399148).

Almost surely, 2^581158152 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 581158152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (815965920).

581158152 is an abundant number, since it is smaller than the sum of its proper divisors (1050773688).

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

581158152 is a wasteful number, since it uses less digits than its factorization.

581158152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304 (or 2291 counting only the distinct ones).

The product of its digits is 16000, while the sum is 36.

The square root of 581158152 is about 24107.2219884416. The cubic root of 581158152 is about 834.5098068261.

The spelling of 581158152 in words is "five hundred eighty-one million, one hundred fifty-eight thousand, one hundred fifty-two".