475662221 has 4 divisors (see below), whose sum is σ = 477025500. Its totient is φ = 474298944.

The previous prime is 475662217. The next prime is 475662251. The reversal of 475662221 is 122266574.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 289476196 + 186186025 = 17014^2 + 13645^2 .

It is a cyclic number.

It is not a de Polignac number, because 475662221 - 2² = 475662217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475662211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 681116 + ... + 681813.

It is an arithmetic number, because the mean of its divisors is an integer number (119256375).

Almost surely, 2^475662221 is an apocalyptic number.

It is an amenable number.

475662221 is a deficient number, since it is larger than the sum of its proper divisors (1363279).

475662221 is a wasteful number, since it uses less digits than its factorization.

475662221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363278.

The product of its digits is 40320, while the sum is 35.

The square root of 475662221 is about 21809.6818179450. The cubic root of 475662221 is about 780.6077998746.

The spelling of 475662221 in words is "four hundred seventy-five million, six hundred sixty-two thousand, two hundred twenty-one".