20566053 has 12 divisors (see below), whose sum is σ = 29858400. Its totient is φ = 13640616.

The previous prime is 20566019. The next prime is 20566057. The reversal of 20566053 is 35066502.

20566053 is a `hidden beast` number, since 2 + 0 + 56 + 605 + 3 = 666.

It is not a de Polignac number, because 20566053 - 2⁹ = 20565541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20566057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3951 + ... + 7532.

It is an arithmetic number, because the mean of its divisors is an integer number (2488200).

Almost surely, 2^20566053 is an apocalyptic number.

It is an amenable number.

20566053 is a deficient number, since it is larger than the sum of its proper divisors (9292347).

20566053 is a wasteful number, since it uses less digits than its factorization.

20566053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11688 (or 11685 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 20566053 is about 4534.9810363440. The cubic root of 20566053 is about 273.9788153831.

The spelling of 20566053 in words is "twenty million, five hundred sixty-six thousand, fifty-three".