475571321 has 2 divisors, whose sum is σ = 475571322. Its totient is φ = 475571320.

The previous prime is 475571303. The next prime is 475571347. The reversal of 475571321 is 123175574.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 466084921 + 9486400 = 21589^2 + 3080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-475571321 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (475571351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237785660 + 237785661.

It is an arithmetic number, because the mean of its divisors is an integer number (237785661).

Almost surely, 2^475571321 is an apocalyptic number.

It is an amenable number.

475571321 is a deficient number, since it is larger than the sum of its proper divisors (1).

475571321 is an equidigital number, since it uses as much as digits as its factorization.

475571321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29400, while the sum is 35.

The square root of 475571321 is about 21807.5977815073. The cubic root of 475571321 is about 780.5580714704.

The spelling of 475571321 in words is "four hundred seventy-five million, five hundred seventy-one thousand, three hundred twenty-one".