20564054 has 16 divisors (see below), whose sum is σ = 35326368. Its totient is φ = 8794752.

The previous prime is 20564041. The next prime is 20564059. The reversal of 20564054 is 45046502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20564059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7064 + ... + 9540.

It is an arithmetic number, because the mean of its divisors is an integer number (2207898).

Almost surely, 2^20564054 is an apocalyptic number.

20564054 is a deficient number, since it is larger than the sum of its proper divisors (14762314).

20564054 is a wasteful number, since it uses less digits than its factorization.

20564054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3079.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 20564054 is about 4534.7606331536. The cubic root of 20564054 is about 273.9699382722.

The spelling of 20564054 in words is "twenty million, five hundred sixty-four thousand, fifty-four".