82521963 has 16 divisors (see below), whose sum is σ = 122489760. Its totient is φ = 54908928.

The previous prime is 82521947. The next prime is 82521973. The reversal of 82521963 is 36912528.

It is not a de Polignac number, because 82521963 - 2⁴ = 82521947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82521973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12931 + ... + 18227.

It is an arithmetic number, because the mean of its divisors is an integer number (7655610).

Almost surely, 2^82521963 is an apocalyptic number.

82521963 is a deficient number, since it is larger than the sum of its proper divisors (39967797).

82521963 is a wasteful number, since it uses less digits than its factorization.

82521963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5883 (or 5877 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 82521963 is about 9084.1600051959. The cubic root of 82521963 is about 435.3680119969.

The spelling of 82521963 in words is "eighty-two million, five hundred twenty-one thousand, nine hundred sixty-three".