20161255 has 8 divisors (see below), whose sum is σ = 24368400. Its totient is φ = 16012416.

The previous prime is 20161243. The next prime is 20161277. The reversal of 20161255 is 55216102.

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 20161255 - 2¹⁵ = 20128487 is a prime.

It is a congruent number.

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, 13810 + ... + 15199.

It is an arithmetic number, because the mean of its divisors is an integer number (3046050).

Almost surely, 2^20161255 is an apocalyptic number.

20161255 is a deficient number, since it is larger than the sum of its proper divisors (4207145).

20161255 is a wasteful number, since it uses less digits than its factorization.

20161255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29153.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 20161255 is about 4490.1286173115. The cubic root of 20161255 is about 272.1693320974.

Adding to 20161255 its reverse (55216102), we get a palindrome (75377357).

It can be divided in two parts, 2016125 and 5, that multiplied together give a square (10080625 = 3175²).

The spelling of 20161255 in words is "twenty million, one hundred sixty-one thousand, two hundred fifty-five".