401771 has 2 divisors, whose sum is σ = 401772. Its totient is φ = 401770.

The previous prime is 401743. The next prime is 401773. The reversal of 401771 is 177104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401771 - 2⁶ = 401707 is a prime.

It is a super-2 number, since 2×401771² = 322839872882, which contains 22 as substring.

Together with 401773, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (401773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200885 + 200886.

It is an arithmetic number, because the mean of its divisors is an integer number (200886).

2⁴⁰¹⁷⁷¹ is an apocalyptic number.

401771 is a deficient number, since it is larger than the sum of its proper divisors (1).

401771 is an equidigital number, since it uses as much as digits as its factorization.

401771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 196, while the sum is 20.

The square root of 401771 is about 633.8540841550. The cubic root of 401771 is about 73.7892102135.

Adding to 401771 its reverse (177104), we get a palindrome (578875).

The spelling of 401771 in words is "four hundred one thousand, seven hundred seventy-one", and thus it is an iban number.