82385505 has 24 divisors (see below), whose sum is σ = 148092672. Its totient is φ = 43938288.

The previous prime is 82385503. The next prime is 82385533. The reversal of 82385505 is 50558328.

It is not a de Polignac number, because 82385505 - 2¹ = 82385503 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 82385505.

It is not an unprimeable number, because it can be changed into a prime (82385503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32689 + ... + 35118.

It is an arithmetic number, because the mean of its divisors is an integer number (6170528).

Almost surely, 2^82385505 is an apocalyptic number.

It is an amenable number.

82385505 is a deficient number, since it is larger than the sum of its proper divisors (65707167).

82385505 is an equidigital number, since it uses as much as digits as its factorization.

82385505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67827 (or 67815 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 82385505 is about 9076.6461316942. The cubic root of 82385505 is about 435.1279053127.

The spelling of 82385505 in words is "eighty-two million, three hundred eighty-five thousand, five hundred five".