82369121 has 2 divisors, whose sum is σ = 82369122. Its totient is φ = 82369120.

The previous prime is 82369103. The next prime is 82369127. The reversal of 82369121 is 12196328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57168721 + 25200400 = 7561^2 + 5020^2 .

It is a cyclic number.

It is not a de Polignac number, because 82369121 - 2⁶ = 82369057 is a prime.

It is not a weakly prime, because it can be changed into another prime (82369127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41184560 + 41184561.

It is an arithmetic number, because the mean of its divisors is an integer number (41184561).

Almost surely, 2^82369121 is an apocalyptic number.

It is an amenable number.

82369121 is a deficient number, since it is larger than the sum of its proper divisors (1).

82369121 is an equidigital number, since it uses as much as digits as its factorization.

82369121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 32.

The square root of 82369121 is about 9075.7435508062. The cubic root of 82369121 is about 435.0990587810.

It can be divided in two parts, 82369 and 121, that multiplied together give a square (9966649 = 3157²).

The spelling of 82369121 in words is "eighty-two million, three hundred sixty-nine thousand, one hundred twenty-one".