82530447 has 4 divisors (see below), whose sum is σ = 110040600. Its totient is φ = 55020296.

The previous prime is 82530421. The next prime is 82530451. The reversal of 82530447 is 74403528.

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 82530447 - 2¹¹ = 82528399 is a prime.

It is a super-2 number, since 2×82530447² = 13622549364039618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82530247) 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, 13755072 + ... + 13755077.

It is an arithmetic number, because the mean of its divisors is an integer number (27510150).

Almost surely, 2^82530447 is an apocalyptic number.

82530447 is a deficient number, since it is larger than the sum of its proper divisors (27510153).

82530447 is a wasteful number, since it uses less digits than its factorization.

82530447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27510152.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 82530447 is about 9084.6269598702. The cubic root of 82530447 is about 435.3829314014.

The spelling of 82530447 in words is "eighty-two million, five hundred thirty thousand, four hundred forty-seven".