205580054 has 16 divisors (see below), whose sum is σ = 312249168. Its totient is φ = 101501952.

The previous prime is 205580051. The next prime is 205580071. The reversal of 205580054 is 450085502.

It is a junction number, because it is equal to n+sod(n) for n = 205579999 and 205580026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205580051) 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, 114149 + ... + 115935.

It is an arithmetic number, because the mean of its divisors is an integer number (19515573).

Almost surely, 2^205580054 is an apocalyptic number.

205580054 is a deficient number, since it is larger than the sum of its proper divisors (106669114).

205580054 is a wasteful number, since it uses less digits than its factorization.

205580054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2479.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 205580054 is about 14338.0631188456. The cubic root of 205580054 is about 590.1924623470.

The spelling of 205580054 in words is "two hundred five million, five hundred eighty thousand, fifty-four".