20556054 has 12 divisors (see below), whose sum is σ = 44538156. Its totient is φ = 6852012.

The previous prime is 20556049. The next prime is 20556059. The reversal of 20556054 is 45065502.

20556054 is a `hidden beast` number, since 2 + 0 + 55 + 605 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (20556049) and next prime (20556059).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20556059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 570984 + ... + 571019.

It is an arithmetic number, because the mean of its divisors is an integer number (3711513).

Almost surely, 2^20556054 is an apocalyptic number.

20556054 is an abundant number, since it is smaller than the sum of its proper divisors (23982102).

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

20556054 is a wasteful number, since it uses less digits than its factorization.

20556054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142011 (or 1142008 counting only the distinct ones).

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

The square root of 20556054 is about 4533.8784721252. The cubic root of 20556054 is about 273.9344063065.

The spelling of 20556054 in words is "twenty million, five hundred fifty-six thousand, fifty-four".