82404001 has 2 divisors, whose sum is σ = 82404002. Its totient is φ = 82404000.

The previous prime is 82403999. The next prime is 82404011. The reversal of 82404001 is 10040428.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55353600 + 27050401 = 7440^2 + 5201^2 .

It is a cyclic number.

It is not a de Polignac number, because 82404001 - 2¹ = 82403999 is a prime.

Together with 82403999, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 82404001.

It is not a weakly prime, because it can be changed into another prime (82404011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41202000 + 41202001.

It is an arithmetic number, because the mean of its divisors is an integer number (41202001).

Almost surely, 2^82404001 is an apocalyptic number.

It is an amenable number.

82404001 is a deficient number, since it is larger than the sum of its proper divisors (1).

82404001 is an equidigital number, since it uses as much as digits as its factorization.

82404001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 82404001 is about 9077.6649530592. The cubic root of 82404001 is about 435.1604657473.

Adding to 82404001 its reverse (10040428), we get a palindrome (92444429).

The spelling of 82404001 in words is "eighty-two million, four hundred four thousand, one".