20054556 has 36 divisors (see below), whose sum is σ = 51224992. Its totient is φ = 6614784.

The previous prime is 20054549. The next prime is 20054581. The reversal of 20054556 is 65545002.

20054556 is a `hidden beast` number, since 200 + 5 + 455 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 621 + ... + 6363.

Almost surely, 2^20054556 is an apocalyptic number.

It is an amenable number.

20054556 is an abundant number, since it is smaller than the sum of its proper divisors (31170436).

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

20054556 is a wasteful number, since it uses less digits than its factorization.

20054556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5850 (or 5845 counting only the distinct ones).

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

The square root of 20054556 is about 4478.2313473067. The cubic root of 20054556 is about 271.6883505260.

Adding to 20054556 its reverse (65545002), we get a palindrome (85599558).

It can be divided in two parts, 2005 and 4556, that added together give a 8-th power (6561 = 3⁸).

The spelling of 20054556 in words is "twenty million, fifty-four thousand, five hundred fifty-six".