20135061 has 20 divisors (see below), whose sum is σ = 30209344. Its totient is φ = 13365000.

The previous prime is 20135047. The next prime is 20135069. The reversal of 20135061 is 16053102.

It is not a de Polignac number, because 20135061 - 2⁶ = 20134997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20135069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26436 + ... + 27186.

Almost surely, 2^20135061 is an apocalyptic number.

It is an amenable number.

20135061 is a deficient number, since it is larger than the sum of its proper divisors (10074283).

20135061 is an equidigital number, since it uses as much as digits as its factorization.

20135061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094 (or 1085 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 20135061 is about 4487.2108263374. The cubic root of 20135061 is about 272.0514113100.

Adding to 20135061 its reverse (16053102), we get a palindrome (36188163).

The spelling of 20135061 in words is "twenty million, one hundred thirty-five thousand, sixty-one".