485178221 has 16 divisors (see below), whose sum is σ = 538852608. Its totient is φ = 433152000.

The previous prime is 485178217. The next prime is 485178229. The reversal of 485178221 is 122871584.

It is a cyclic number.

It is not a de Polignac number, because 485178221 - 2² = 485178217 is a prime.

It is a super-2 number, since 2×485178221² = 470795812265449682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (485178229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205196 + ... + 207546.

It is an arithmetic number, because the mean of its divisors is an integer number (33678288).

Almost surely, 2^485178221 is an apocalyptic number.

It is an amenable number.

485178221 is a deficient number, since it is larger than the sum of its proper divisors (53674387).

485178221 is a wasteful number, since it uses less digits than its factorization.

485178221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2692.

The product of its digits is 35840, while the sum is 38.

The square root of 485178221 is about 22026.7614732625. The cubic root of 485178221 is about 785.7790262325.

The spelling of 485178221 in words is "four hundred eighty-five million, one hundred seventy-eight thousand, two hundred twenty-one".