82451 has 4 divisors (see below), whose sum is σ = 84504. Its totient is φ = 80400.

The previous prime is 82421. The next prime is 82457. The reversal of 82451 is 15428.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82451 - 2⁶ = 82387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82457) 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, 965 + ... + 1046.

It is an arithmetic number, because the mean of its divisors is an integer number (21126).

2⁸²⁴⁵¹ is an apocalyptic number.

82451 is a deficient number, since it is larger than the sum of its proper divisors (2053).

82451 is a wasteful number, since it uses less digits than its factorization.

82451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052.

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

The square root of 82451 is about 287.1428216063. The cubic root of 82451 is about 43.5243181066.

Adding to 82451 its reverse (15428), we get a palindrome (97879).

It can be divided in two parts, 824 and 51, that multiplied together give a palindrome (42024).

The spelling of 82451 in words is "eighty-two thousand, four hundred fifty-one".