35718121 has 2 divisors, whose sum is σ = 35718122. Its totient is φ = 35718120.

The previous prime is 35718091. The next prime is 35718161. The reversal of 35718121 is 12181753.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19678096 + 16040025 = 4436^2 + 4005^2 .

It is an emirp because it is prime and its reverse (12181753) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 35718121 - 2⁹ = 35717609 is a prime.

It is equal to p_2188045 and since 35718121 and 2188045 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 35718121.

It is not a weakly prime, because it can be changed into another prime (35718161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17859060 + 17859061.

It is an arithmetic number, because the mean of its divisors is an integer number (17859061).

Almost surely, 2^35718121 is an apocalyptic number.

It is an amenable number.

35718121 is a deficient number, since it is larger than the sum of its proper divisors (1).

35718121 is an equidigital number, since it uses as much as digits as its factorization.

35718121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 28.

The square root of 35718121 is about 5976.4639210824. The cubic root of 35718121 is about 329.3286658092.

Adding to 35718121 its reverse (12181753), we get a palindrome (47899874).

The spelling of 35718121 in words is "thirty-five million, seven hundred eighteen thousand, one hundred twenty-one".