581167 has 4 divisors (see below), whose sum is σ = 582736. Its totient is φ = 579600.

The previous prime is 581149. The next prime is 581171. The reversal of 581167 is 761185.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 581167 - 2¹¹ = 579119 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118 + ... + 1084.

It is an arithmetic number, because the mean of its divisors is an integer number (145684).

2⁵⁸¹¹⁶⁷ is an apocalyptic number.

581167 is a deficient number, since it is larger than the sum of its proper divisors (1569).

581167 is an equidigital number, since it uses as much as digits as its factorization.

581167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568.

The product of its digits is 1680, while the sum is 28.

The square root of 581167 is about 762.3430986111. The cubic root of 581167 is about 83.4514041878.

It can be divided in two parts, 58 and 1167, that added together give a triangular number (1225 = T₄₉).

The spelling of 581167 in words is "five hundred eighty-one thousand, one hundred sixty-seven".