82520985 has 8 divisors (see below), whose sum is σ = 132033600. Its totient is φ = 44011184.

The previous prime is 82520981. The next prime is 82520993. The reversal of 82520985 is 58902528.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82520985 - 2² = 82520981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82520981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2750685 + ... + 2750714.

It is an arithmetic number, because the mean of its divisors is an integer number (16504200).

Almost surely, 2^82520985 is an apocalyptic number.

It is an amenable number.

82520985 is a deficient number, since it is larger than the sum of its proper divisors (49512615).

82520985 is a wasteful number, since it uses less digits than its factorization.

82520985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5501407.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 82520985 is about 9084.1061750730. The cubic root of 82520985 is about 435.3662920846.

The spelling of 82520985 in words is "eighty-two million, five hundred twenty thousand, nine hundred eighty-five".