10135561 has 4 divisors (see below), whose sum is σ = 10326852. Its totient is φ = 9944272.

The previous prime is 10135547. The next prime is 10135579. The reversal of 10135561 is 16553101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16553101 = 31 ⋅533971.

It can be written as a sum of positive squares in 2 ways, for example, as 8231161 + 1904400 = 2869^2 + 1380^2 .

It is a cyclic number.

It is not a de Polignac number, because 10135561 - 2⁹ = 10135049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10135501) 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, 95566 + ... + 95671.

It is an arithmetic number, because the mean of its divisors is an integer number (2581713).

Almost surely, 2^10135561 is an apocalyptic number.

It is an amenable number.

10135561 is a deficient number, since it is larger than the sum of its proper divisors (191291).

10135561 is an equidigital number, since it uses as much as digits as its factorization.

10135561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191290.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 10135561 is about 3183.6395838725. The cubic root of 10135561 is about 216.4126271755.

Adding to 10135561 its reverse (16553101), we get a palindrome (26688662).

The spelling of 10135561 in words is "ten million, one hundred thirty-five thousand, five hundred sixty-one".