34581 has 4 divisors (see below), whose sum is σ = 46112. Its totient is φ = 23052.

The previous prime is 34549. The next prime is 34583. The reversal of 34581 is 18543.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 34581 - 2⁵ = 34549 is a prime.

It is a super-2 number, since 2×34581² = 2391691122, which contains 22 as substring.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 34581.

It is not an unprimeable number, because it can be changed into a prime (34583) by changing a digit.

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, 5761 + ... + 5766.

It is an arithmetic number, because the mean of its divisors is an integer number (11528).

2³⁴⁵⁸¹ is an apocalyptic number.

It is an amenable number.

34581 is a deficient number, since it is larger than the sum of its proper divisors (11531).

34581 is a wasteful number, since it uses less digits than its factorization.

34581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11530.

The product of its digits is 480, while the sum is 21.

The square root of 34581 is about 185.9596730477. The cubic root of 34581 is about 32.5796076061.

The spelling of 34581 in words is "thirty-four thousand, five hundred eighty-one".