20112655 has 8 divisors (see below), whose sum is σ = 24236784. Its totient is φ = 16022400.

The previous prime is 20112641. The next prime is 20112661. The reversal of 20112655 is 55621102.

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

It is not a de Polignac number, because 20112655 - 2¹⁵ = 20079887 is a prime.

It is a super-2 number, since 2×20112655² = 809037782298050, which contains 22 as substring.

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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7141 + ... + 9550.

It is an arithmetic number, because the mean of its divisors is an integer number (3029598).

Almost surely, 2^20112655 is an apocalyptic number.

20112655 is a deficient number, since it is larger than the sum of its proper divisors (4124129).

20112655 is a wasteful number, since it uses less digits than its factorization.

20112655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16937.

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

The square root of 20112655 is about 4484.7134802571. The cubic root of 20112655 is about 271.9504622516.

Adding to 20112655 its reverse (55621102), we get a palindrome (75733757).

The spelling of 20112655 in words is "twenty million, one hundred twelve thousand, six hundred fifty-five".