20150255 has 4 divisors (see below), whose sum is σ = 24180312. Its totient is φ = 16120200.

The previous prime is 20150233. The next prime is 20150257. The reversal of 20150255 is 55205102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55205102 = 2 ⋅27602551.

It is not a de Polignac number, because 20150255 - 2¹⁴ = 20133871 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20150257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2015021 + ... + 2015030.

It is an arithmetic number, because the mean of its divisors is an integer number (6045078).

Almost surely, 2^20150255 is an apocalyptic number.

20150255 is a deficient number, since it is larger than the sum of its proper divisors (4030057).

20150255 is an equidigital number, since it uses as much as digits as its factorization.

20150255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030056.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 20150255 is about 4488.9035409552. The cubic root of 20150255 is about 272.1198244766.

Adding to 20150255 its reverse (55205102), we get a palindrome (75355357).

The spelling of 20150255 in words is "twenty million, one hundred fifty thousand, two hundred fifty-five".