285220054 has 16 divisors (see below), whose sum is σ = 489387168. Its totient is φ = 122127552.

The previous prime is 285220051. The next prime is 285220063. The reversal of 285220054 is 450022582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285220051) 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, 8164 + ... + 25240.

It is an arithmetic number, because the mean of its divisors is an integer number (30586698).

Almost surely, 2^285220054 is an apocalyptic number.

285220054 is a deficient number, since it is larger than the sum of its proper divisors (204167114).

285220054 is a wasteful number, since it uses less digits than its factorization.

285220054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18279.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 285220054 is about 16888.4591955572. The cubic root of 285220054 is about 658.2537661818.

The spelling of 285220054 in words is "two hundred eighty-five million, two hundred twenty thousand, fifty-four".