35836561 has 4 divisors (see below), whose sum is σ = 37944612. Its totient is φ = 33728512.

The previous prime is 35836543. The next prime is 35836571. The reversal of 35836561 is 16563853.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16563853 = 181 ⋅91513.

It can be written as a sum of positive squares in 2 ways, for example, as 14676561 + 21160000 = 3831^2 + 4600^2 .

It is a cyclic number.

It is not a de Polignac number, because 35836561 - 2¹⁷ = 35705489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 35836561.

It is not an unprimeable number, because it can be changed into a prime (35836511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054000 + ... + 1054033.

It is an arithmetic number, because the mean of its divisors is an integer number (9486153).

Almost surely, 2^35836561 is an apocalyptic number.

It is an amenable number.

35836561 is a deficient number, since it is larger than the sum of its proper divisors (2108051).

35836561 is a wasteful number, since it uses less digits than its factorization.

35836561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108050.

The product of its digits is 64800, while the sum is 37.

The square root of 35836561 is about 5986.3645896320. The cubic root of 35836561 is about 329.6922781860.

The spelling of 35836561 in words is "thirty-five million, eight hundred thirty-six thousand, five hundred sixty-one".