20562255 has 40 divisors (see below), whose sum is σ = 42131232. Its totient is φ = 9398592.

The previous prime is 20562229. The next prime is 20562257. The reversal of 20562255 is 55226502.

It is not a de Polignac number, because 20562255 - 2⁸ = 20561999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20562257) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 792 + ... + 6461.

Almost surely, 2^20562255 is an apocalyptic number.

20562255 is an abundant number, since it is smaller than the sum of its proper divisors (21568977).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20562255 is an equidigital number, since it uses as much as digits as its factorization.

20562255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7277 (or 7268 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 20562255 is about 4534.5622721493. The cubic root of 20562255 is about 273.9619488247.

Adding to 20562255 its reverse (55226502), we get a palindrome (75788757).

The spelling of 20562255 in words is "twenty million, five hundred sixty-two thousand, two hundred fifty-five".