35818561 has 2 divisors, whose sum is σ = 35818562. Its totient is φ = 35818560.

The previous prime is 35818537. The next prime is 35818583. The reversal of 35818561 is 16581853.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31640625 + 4177936 = 5625^2 + 2044^2 .

It is an emirp because it is prime and its reverse (16581853) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 35818561 - 2⁹ = 35818049 is a prime.

It is a super-2 number, since 2×35818561² = 2565938624221442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 35818561.

It is not a weakly prime, because it can be changed into another prime (35818261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17909280 + 17909281.

It is an arithmetic number, because the mean of its divisors is an integer number (17909281).

Almost surely, 2^35818561 is an apocalyptic number.

It is an amenable number.

35818561 is a deficient number, since it is larger than the sum of its proper divisors (1).

35818561 is an equidigital number, since it uses as much as digits as its factorization.

35818561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 37.

The square root of 35818561 is about 5984.8609841833. The cubic root of 35818561 is about 329.6370696251.

The spelling of 35818561 in words is "thirty-five million, eight hundred eighteen thousand, five hundred sixty-one".