35782561 has 2 divisors, whose sum is σ = 35782562. Its totient is φ = 35782560.

The previous prime is 35782559. The next prime is 35782577. The reversal of 35782561 is 16528753.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30747025 + 5035536 = 5545^2 + 2244^2 .

It is a cyclic number.

It is not a de Polignac number, because 35782561 - 2¹ = 35782559 is a prime.

Together with 35782559, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 35782561.

It is not a weakly prime, because it can be changed into another prime (35782961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17891280 + 17891281.

It is an arithmetic number, because the mean of its divisors is an integer number (17891281).

Almost surely, 2^35782561 is an apocalyptic number.

It is an amenable number.

35782561 is a deficient number, since it is larger than the sum of its proper divisors (1).

35782561 is an equidigital number, since it uses as much as digits as its factorization.

35782561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 37.

The square root of 35782561 is about 5981.8526394421. The cubic root of 35782561 is about 329.5265969905.

The spelling of 35782561 in words is "thirty-five million, seven hundred eighty-two thousand, five hundred sixty-one".