35821001 has 2 divisors, whose sum is σ = 35821002. Its totient is φ = 35821000.

The previous prime is 35820971. The next prime is 35821039. The reversal of 35821001 is 10012853.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26790976 + 9030025 = 5176^2 + 3005^2 .

It is an emirp because it is prime and its reverse (10012853) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-35821001 is a prime.

It is a super-2 number, since 2×35821001² = 2566288225284002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (35821501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17910500 + 17910501.

It is an arithmetic number, because the mean of its divisors is an integer number (17910501).

Almost surely, 2^35821001 is an apocalyptic number.

It is an amenable number.

35821001 is a deficient number, since it is larger than the sum of its proper divisors (1).

35821001 is an equidigital number, since it uses as much as digits as its factorization.

35821001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 35821001 is about 5985.0648283874. The cubic root of 35821001 is about 329.6445545358.

Adding to 35821001 its reverse (10012853), we get a palindrome (45833854).

The spelling of 35821001 in words is "thirty-five million, eight hundred twenty-one thousand, one".