82951521 has 16 divisors (see below), whose sum is σ = 115462848. Its totient is φ = 52920000.

The previous prime is 82951493. The next prime is 82951529. The reversal of 82951521 is 12515928.

It is not a de Polignac number, because 82951521 - 2⁵ = 82951489 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82951529) 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, 646 + ... + 12896.

It is an arithmetic number, because the mean of its divisors is an integer number (7216428).

Almost surely, 2^82951521 is an apocalyptic number.

It is an amenable number.

82951521 is a deficient number, since it is larger than the sum of its proper divisors (32511327).

82951521 is a wasteful number, since it uses less digits than its factorization.

82951521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12352.

The product of its digits is 7200, while the sum is 33.

The square root of 82951521 is about 9107.7725597426. The cubic root of 82951521 is about 436.1221233666.

The spelling of 82951521 in words is "eighty-two million, nine hundred fifty-one thousand, five hundred twenty-one".