20011255 has 8 divisors (see below), whose sum is σ = 26196624. Its totient is φ = 14553600.

The previous prime is 20011249. The next prime is 20011273. The reversal of 20011255 is 55211002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20011255 - 2¹³ = 20003063 is a prime.

It is a Duffinian number.

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, 181866 + ... + 181975.

It is an arithmetic number, because the mean of its divisors is an integer number (3274578).

Almost surely, 2^20011255 is an apocalyptic number.

20011255 is a deficient number, since it is larger than the sum of its proper divisors (6185369).

20011255 is a wasteful number, since it uses less digits than its factorization.

20011255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363857.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 20011255 is about 4473.3941252700. The cubic root of 20011255 is about 271.4926700616.

Adding to 20011255 its reverse (55211002), we get a palindrome (75222257).

The spelling of 20011255 in words is "twenty million, eleven thousand, two hundred fifty-five".