11435561 has 2 divisors, whose sum is σ = 11435562. Its totient is φ = 11435560.

The previous prime is 11435537. The next prime is 11435569. The reversal of 11435561 is 16553411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10523536 + 912025 = 3244^2 + 955^2 .

It is a cyclic number.

It is not a de Polignac number, because 11435561 - 2¹⁸ = 11173417 is a prime.

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 11435561.

It is not a weakly prime, because it can be changed into another prime (11435569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5717780 + 5717781.

It is an arithmetic number, because the mean of its divisors is an integer number (5717781).

Almost surely, 2^11435561 is an apocalyptic number.

It is an amenable number.

11435561 is a deficient number, since it is larger than the sum of its proper divisors (1).

11435561 is an equidigital number, since it uses as much as digits as its factorization.

11435561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 26.

The square root of 11435561 is about 3381.6506324575. The cubic root of 11435561 is about 225.2954866723.

Adding to 11435561 its reverse (16553411), we get a palindrome (27988972).

The spelling of 11435561 in words is "eleven million, four hundred thirty-five thousand, five hundred sixty-one".