83261211 has 48 divisors (see below), whose sum is σ = 132370560. Its totient is φ = 46033920.

The previous prime is 83261207. The next prime is 83261263. The reversal of 83261211 is 11216238.

It is not a de Polignac number, because 83261211 - 2² = 83261207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83261281) 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 47 ways as a sum of consecutive naturals, for example, 858315 + ... + 858411.

It is an arithmetic number, because the mean of its divisors is an integer number (2757720).

Almost surely, 2^83261211 is an apocalyptic number.

83261211 is a deficient number, since it is larger than the sum of its proper divisors (49109349).

83261211 is a wasteful number, since it uses less digits than its factorization.

83261211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 167 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

The square root of 83261211 is about 9124.7581337809. The cubic root of 83261211 is about 436.6641866754.

Adding to 83261211 its reverse (11216238), we get a palindrome (94477449).

The spelling of 83261211 in words is "eighty-three million, two hundred sixty-one thousand, two hundred eleven".