475255381 has 2 divisors, whose sum is σ = 475255382. Its totient is φ = 475255380.

The previous prime is 475255309. The next prime is 475255387. The reversal of 475255381 is 183552574.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242082481 + 233172900 = 15559^2 + 15270^2 .

It is a cyclic number.

It is not a de Polignac number, because 475255381 - 2¹⁵ = 475222613 is a prime.

It is a super-2 number, since 2×475255381² = 451735354338910322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (475255387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237627690 + 237627691.

It is an arithmetic number, because the mean of its divisors is an integer number (237627691).

Almost surely, 2^475255381 is an apocalyptic number.

It is an amenable number.

475255381 is a deficient number, since it is larger than the sum of its proper divisors (1).

475255381 is an equidigital number, since it uses as much as digits as its factorization.

475255381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168000, while the sum is 40.

The square root of 475255381 is about 21800.3527723750. The cubic root of 475255381 is about 780.3851817712.

The spelling of 475255381 in words is "four hundred seventy-five million, two hundred fifty-five thousand, three hundred eighty-one".