82243511 has 16 divisors (see below), whose sum is σ = 96326400. Its totient is φ = 70189560.

The previous prime is 82243471. The next prime is 82243529. The reversal of 82243511 is 11534228.

It is a de Polignac number, because none of the positive numbers 2^k-82243511 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 (82243531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118676 + ... + 119366.

It is an arithmetic number, because the mean of its divisors is an integer number (6020400).

Almost surely, 2^82243511 is an apocalyptic number.

82243511 is a deficient number, since it is larger than the sum of its proper divisors (14082889).

82243511 is an equidigital number, since it uses as much as digits as its factorization.

82243511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059 (or 1045 counting only the distinct ones).

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

The square root of 82243511 is about 9068.8208164017. The cubic root of 82243511 is about 434.8777760282.

Adding to 82243511 its reverse (11534228), we get a palindrome (93777739).

The spelling of 82243511 in words is "eighty-two million, two hundred forty-three thousand, five hundred eleven".