82423511 has 4 divisors (see below), whose sum is σ = 83179800. Its totient is φ = 81667224.

The previous prime is 82423507. The next prime is 82423529. The reversal of 82423511 is 11532428.

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 82423511 - 2² = 82423507 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82423541) 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 3 ways as a sum of consecutive naturals, for example, 377981 + ... + 378198.

It is an arithmetic number, because the mean of its divisors is an integer number (20794950).

Almost surely, 2^82423511 is an apocalyptic number.

82423511 is a deficient number, since it is larger than the sum of its proper divisors (756289).

82423511 is a wasteful number, since it uses less digits than its factorization.

82423511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756288.

The product of its digits is 1920, while the sum is 26.

The square root of 82423511 is about 9078.7395050194. The cubic root of 82423511 is about 435.1948059518.

Adding to 82423511 its reverse (11532428), we get a palindrome (93955939).

The spelling of 82423511 in words is "eighty-two million, four hundred twenty-three thousand, five hundred eleven".