81452 has 12 divisors (see below), whose sum is σ = 162960. Its totient is φ = 34896.

The previous prime is 81439. The next prime is 81457. The reversal of 81452 is 25418.

81452 is an admirable number.

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

It is not an unprimeable number, because it can be changed into a prime (81457) by changing a digit.

81452 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1427 + ... + 1482.

It is an arithmetic number, because the mean of its divisors is an integer number (13580).

2⁸¹⁴⁵² is an apocalyptic number.

It is an amenable number.

81452 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.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81480).

81452 is a wasteful number, since it uses less digits than its factorization.

81452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920 (or 2918 counting only the distinct ones).

The product of its digits is 320, while the sum is 20.

The square root of 81452 is about 285.3979677573. The cubic root of 81452 is about 43.3478189573.

It can be divided in two parts, 8145 and 2, that multiplied together give a triangular number (16290 = T₁₈₀).

The spelling of 81452 in words is "eighty-one thousand, four hundred fifty-two".