82541649 has 16 divisors (see below), whose sum is σ = 113356800. Its totient is φ = 53401296.

The previous prime is 82541633. The next prime is 82541671. The reversal of 82541649 is 94614528.

It is not a de Polignac number, because 82541649 - 2⁴ = 82541633 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82541609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11032 + ... + 16934.

It is an arithmetic number, because the mean of its divisors is an integer number (7084800).

Almost surely, 2^82541649 is an apocalyptic number.

It is an amenable number.

82541649 is a deficient number, since it is larger than the sum of its proper divisors (30815151).

82541649 is a wasteful number, since it uses less digits than its factorization.

82541649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6044.

The product of its digits is 69120, while the sum is 39.

The square root of 82541649 is about 9085.2434749983. The cubic root of 82541649 is about 435.4026289357.

The spelling of 82541649 in words is "eighty-two million, five hundred forty-one thousand, six hundred forty-nine".