20071055 has 4 divisors (see below), whose sum is σ = 24085272. Its totient is φ = 16056840.

The previous prime is 20071039. The next prime is 20071097. The reversal of 20071055 is 55017002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20071055 - 2⁴ = 20071039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2007101 + ... + 2007110.

It is an arithmetic number, because the mean of its divisors is an integer number (6021318).

Almost surely, 2^20071055 is an apocalyptic number.

20071055 is a deficient number, since it is larger than the sum of its proper divisors (4014217).

20071055 is an equidigital number, since it uses as much as digits as its factorization.

20071055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4014216.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 20071055 is about 4480.0731020822. The cubic root of 20071055 is about 271.7628366324.

Adding to 20071055 its reverse (55017002), we get a palindrome (75088057).

The spelling of 20071055 in words is "twenty million, seventy-one thousand, fifty-five".