82521675 has 36 divisors (see below), whose sum is σ = 152914320. Its totient is φ = 42490560.

The previous prime is 82521661. The next prime is 82521697. The reversal of 82521675 is 57612528.

It is a happy number.

It is not a de Polignac number, because 82521675 - 2¹⁰ = 82520651 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 202 + ... + 12848.

It is an arithmetic number, because the mean of its divisors is an integer number (4247620).

Almost surely, 2^82521675 is an apocalyptic number.

82521675 is a deficient number, since it is larger than the sum of its proper divisors (70392645).

82521675 is a wasteful number, since it uses less digits than its factorization.

82521675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12692 (or 12684 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 82521675 is about 9084.1441534137. The cubic root of 82521675 is about 435.3675055211.

It can be divided in two parts, 825 and 21675, that added together give a square (22500 = 150²).

The spelling of 82521675 in words is "eighty-two million, five hundred twenty-one thousand, six hundred seventy-five".