475405321 has 2 divisors, whose sum is σ = 475405322. Its totient is φ = 475405320.

The previous prime is 475405319. The next prime is 475405339. The reversal of 475405321 is 123504574.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 458430921 + 16974400 = 21411^2 + 4120^2 .

It is a cyclic number.

It is not a de Polignac number, because 475405321 - 2¹ = 475405319 is a prime.

It is a super-2 number, since 2×475405321² = 452020438470226082, which contains 22 as substring.

Together with 475405319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (475405121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237702660 + 237702661.

It is an arithmetic number, because the mean of its divisors is an integer number (237702661).

Almost surely, 2^475405321 is an apocalyptic number.

It is an amenable number.

475405321 is a deficient number, since it is larger than the sum of its proper divisors (1).

475405321 is an equidigital number, since it uses as much as digits as its factorization.

475405321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 475405321 is about 21803.7914363534. The cubic root of 475405321 is about 780.4672419684.

Adding to 475405321 its reverse (123504574), we get a palindrome (598909895).

The spelling of 475405321 in words is "four hundred seventy-five million, four hundred five thousand, three hundred twenty-one".