401571941 has 2 divisors, whose sum is σ = 401571942. Its totient is φ = 401571940.

The previous prime is 401571893. The next prime is 401571979. The reversal of 401571941 is 149175104.

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., 332332900 + 69239041 = 18230^2 + 8321^2 .

It is a cyclic number.

It is not a de Polignac number, because 401571941 - 2²² = 397377637 is a prime.

It is a super-2 number, since 2×401571941² = 322520047597014962, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401571898 and 401571907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401571341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200785970 + 200785971.

It is an arithmetic number, because the mean of its divisors is an integer number (200785971).

Almost surely, 2^401571941 is an apocalyptic number.

It is an amenable number.

401571941 is a deficient number, since it is larger than the sum of its proper divisors (1).

401571941 is an equidigital number, since it uses as much as digits as its factorization.

401571941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 401571941 is about 20039.2599913270. The cubic root of 401571941 is about 737.7702181692.

The spelling of 401571941 in words is "four hundred one million, five hundred seventy-one thousand, nine hundred forty-one".