401040571 has 2 divisors, whose sum is σ = 401040572. Its totient is φ = 401040570.

The previous prime is 401040553. The next prime is 401040617. The reversal of 401040571 is 175040104.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401040571 is a prime.

It is not a weakly prime, because it can be changed into another prime (401040551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200520285 + 200520286.

It is an arithmetic number, because the mean of its divisors is an integer number (200520286).

Almost surely, 2^401040571 is an apocalyptic number.

401040571 is a deficient number, since it is larger than the sum of its proper divisors (1).

401040571 is an equidigital number, since it uses as much as digits as its factorization.

401040571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 401040571 is about 20025.9973784079. The cubic root of 401040571 is about 737.4446625529. Note that the first 3 decimals are identical.

Adding to 401040571 its reverse (175040104), we get a palindrome (576080675).

The spelling of 401040571 in words is "four hundred one million, forty thousand, five hundred seventy-one".