20143255 has 32 divisors (see below), whose sum is σ = 27812160. Its totient is φ = 13870080.

The previous prime is 20143243. The next prime is 20143271. The reversal of 20143255 is 55234102.

It is not a de Polignac number, because 20143255 - 2⁵ = 20143223 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116349 + ... + 116521.

It is an arithmetic number, because the mean of its divisors is an integer number (869130).

Almost surely, 2^20143255 is an apocalyptic number.

20143255 is a deficient number, since it is larger than the sum of its proper divisors (7668905).

20143255 is a wasteful number, since it uses less digits than its factorization.

20143255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 20143255 is about 4488.1237728031. The cubic root of 20143255 is about 272.0883102453.

Adding to 20143255 its reverse (55234102), we get a palindrome (75377357).

The spelling of 20143255 in words is "twenty million, one hundred forty-three thousand, two hundred fifty-five".