475211381 has 2 divisors, whose sum is σ = 475211382. Its totient is φ = 475211380.

The previous prime is 475211339. The next prime is 475211417. The reversal of 475211381 is 183112574.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 266668900 + 208542481 = 16330^2 + 14441^2 .

It is a cyclic number.

It is not a de Polignac number, because 475211381 - 2²⁶ = 408102517 is a prime.

It is a super-2 number, since 2×475211381² = 451651713263854322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (475211881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237605690 + 237605691.

It is an arithmetic number, because the mean of its divisors is an integer number (237605691).

Almost surely, 2^475211381 is an apocalyptic number.

It is an amenable number.

475211381 is a deficient number, since it is larger than the sum of its proper divisors (1).

475211381 is an equidigital number, since it uses as much as digits as its factorization.

475211381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 32.

The square root of 475211381 is about 21799.3435910350. The cubic root of 475211381 is about 780.3610978722.

The spelling of 475211381 in words is "four hundred seventy-five million, two hundred eleven thousand, three hundred eighty-one".