82333421 has 2 divisors, whose sum is σ = 82333422. Its totient is φ = 82333420.

The previous prime is 82333417. The next prime is 82333423. The reversal of 82333421 is 12433328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75516100 + 6817321 = 8690^2 + 2611^2 .

It is a cyclic number.

It is not a de Polignac number, because 82333421 - 2² = 82333417 is a prime.

Together with 82333423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82333423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41166710 + 41166711.

It is an arithmetic number, because the mean of its divisors is an integer number (41166711).

Almost surely, 2^82333421 is an apocalyptic number.

It is an amenable number.

82333421 is a deficient number, since it is larger than the sum of its proper divisors (1).

82333421 is an equidigital number, since it uses as much as digits as its factorization.

82333421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 26.

The square root of 82333421 is about 9073.7765566494. The cubic root of 82333421 is about 435.0361902334.

Adding to 82333421 its reverse (12433328), we get a palindrome (94766749).

The spelling of 82333421 in words is "eighty-two million, three hundred thirty-three thousand, four hundred twenty-one".