82504445 has 4 divisors (see below), whose sum is σ = 99005340. Its totient is φ = 66003552.

The previous prime is 82504439. The next prime is 82504447. The reversal of 82504445 is 54440528.

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 20693401 + 61811044 = 4549^2 + 7862^2 .

It is a cyclic number.

It is not a de Polignac number, because 82504445 - 2²⁶ = 15395581 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82504447) 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, 8250440 + ... + 8250449.

It is an arithmetic number, because the mean of its divisors is an integer number (24751335).

Almost surely, 2^82504445 is an apocalyptic number.

It is an amenable number.

82504445 is a deficient number, since it is larger than the sum of its proper divisors (16500895).

82504445 is a wasteful number, since it uses less digits than its factorization.

82504445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16500894.

The product of its (nonzero) digits is 25600, while the sum is 32.

The square root of 82504445 is about 9083.1957481935. The cubic root of 82504445 is about 435.3372027581.

The spelling of 82504445 in words is "eighty-two million, five hundred four thousand, four hundred forty-five".