20552665 has 8 divisors (see below), whose sum is σ = 28186560. Its totient is φ = 14093232.

The previous prime is 20552647. The next prime is 20552671. The reversal of 20552665 is 56625502.

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 20552665 - 2¹¹ = 20550617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293575 + ... + 293644.

It is an arithmetic number, because the mean of its divisors is an integer number (3523320).

Almost surely, 2^20552665 is an apocalyptic number.

It is an amenable number.

20552665 is a deficient number, since it is larger than the sum of its proper divisors (7633895).

20552665 is an equidigital number, since it uses as much as digits as its factorization.

20552665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587231.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 20552665 is about 4533.5047148977. The cubic root of 20552665 is about 273.9193512976.

The spelling of 20552665 in words is "twenty million, five hundred fifty-two thousand, six hundred sixty-five".