82572449 has 4 divisors (see below), whose sum is σ = 83390100. Its totient is φ = 81754800.

The previous prime is 82572443. The next prime is 82572473. The reversal of 82572449 is 94427528.

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

It can be written as a sum of positive squares in 2 ways, for example, as 51380224 + 31192225 = 7168^2 + 5585^2 .

It is a cyclic number.

It is not a de Polignac number, because 82572449 - 2⁴ = 82572433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82572443) 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, 408674 + ... + 408875.

It is an arithmetic number, because the mean of its divisors is an integer number (20847525).

Almost surely, 2^82572449 is an apocalyptic number.

It is an amenable number.

82572449 is a deficient number, since it is larger than the sum of its proper divisors (817651).

82572449 is a wasteful number, since it uses less digits than its factorization.

82572449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817650.

The product of its digits is 161280, while the sum is 41.

The square root of 82572449 is about 9086.9383732916. The cubic root of 82572449 is about 435.4567782994.

The spelling of 82572449 in words is "eighty-two million, five hundred seventy-two thousand, four hundred forty-nine".