481975221 has 48 divisors (see below), whose sum is σ = 810129600. Its totient is φ = 252628992.

The previous prime is 481975201. The next prime is 481975231. The reversal of 481975221 is 122579184.

It is not a de Polignac number, because 481975221 - 2¹³ = 481967029 is a prime.

It is a super-2 number, since 2×481975221² = 464600227315997682, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 481975221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481975201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 341365 + ... + 342773.

It is an arithmetic number, because the mean of its divisors is an integer number (16877700).

Almost surely, 2^481975221 is an apocalyptic number.

It is an amenable number.

481975221 is a deficient number, since it is larger than the sum of its proper divisors (328154379).

481975221 is a wasteful number, since it uses less digits than its factorization.

481975221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618 (or 1611 counting only the distinct ones).

The product of its digits is 40320, while the sum is 39.

The square root of 481975221 is about 21953.9340665859. The cubic root of 481975221 is about 784.0460485283.

The spelling of 481975221 in words is "four hundred eighty-one million, nine hundred seventy-five thousand, two hundred twenty-one".