20567055 has 8 divisors (see below), whose sum is σ = 32907312. Its totient is φ = 10969088.

The previous prime is 20567051. The next prime is 20567069. The reversal of 20567055 is 55076502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20567055 - 2² = 20567051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20567051) 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 7 ways as a sum of consecutive naturals, for example, 685554 + ... + 685583.

It is an arithmetic number, because the mean of its divisors is an integer number (4113414).

Almost surely, 2^20567055 is an apocalyptic number.

20567055 is a deficient number, since it is larger than the sum of its proper divisors (12340257).

20567055 is a wasteful number, since it uses less digits than its factorization.

20567055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371145.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 20567055 is about 4535.0915095508. The cubic root of 20567055 is about 273.9832648240.

The spelling of 20567055 in words is "twenty million, five hundred sixty-seven thousand, fifty-five".