82137563 has 4 divisors (see below), whose sum is σ = 82984440. Its totient is φ = 81290688.

The previous prime is 82137527. The next prime is 82137571. The reversal of 82137563 is 36573128.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82137563 - 2¹⁰ = 82136539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82137593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423293 + ... + 423486.

It is an arithmetic number, because the mean of its divisors is an integer number (20746110).

Almost surely, 2^82137563 is an apocalyptic number.

82137563 is a deficient number, since it is larger than the sum of its proper divisors (846877).

82137563 is an equidigital number, since it uses as much as digits as its factorization.

82137563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846876.

The product of its digits is 30240, while the sum is 35.

The square root of 82137563 is about 9062.9776012081. The cubic root of 82137563 is about 434.6909559013.

The spelling of 82137563 in words is "eighty-two million, one hundred thirty-seven thousand, five hundred sixty-three".