475888381 has 2 divisors, whose sum is σ = 475888382. Its totient is φ = 475888380.

The previous prime is 475888333. The next prime is 475888397. The reversal of 475888381 is 183888574.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 421645156 + 54243225 = 20534^2 + 7365^2 .

It is a cyclic number.

It is not a de Polignac number, because 475888381 - 2⁷ = 475888253 is a prime.

It is a super-2 number, since 2×475888381² = 452939502341602322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (475888981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237944190 + 237944191.

It is an arithmetic number, because the mean of its divisors is an integer number (237944191).

Almost surely, 2^475888381 is an apocalyptic number.

It is an amenable number.

475888381 is a deficient number, since it is larger than the sum of its proper divisors (1).

475888381 is an equidigital number, since it uses as much as digits as its factorization.

475888381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1720320, while the sum is 52.

The square root of 475888381 is about 21814.8660550552. The cubic root of 475888381 is about 780.7314970977.

It can be divided in two parts, 4758 and 88381, that added together give a palindrome (93139).

The spelling of 475888381 in words is "four hundred seventy-five million, eight hundred eighty-eight thousand, three hundred eighty-one".