40571 has 4 divisors (see below), whose sum is σ = 42000. Its totient is φ = 39144.

The previous prime is 40559. The next prime is 40577. The reversal of 40571 is 17504.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40571 - 2⁶ = 40507 is a prime.

It is a super-3 number, since 3×40571³ = 200340333268233, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671 + ... + 728.

It is an arithmetic number, because the mean of its divisors is an integer number (10500).

2⁴⁰⁵⁷¹ is an apocalyptic number.

40571 is a deficient number, since it is larger than the sum of its proper divisors (1429).

40571 is a wasteful number, since it uses less digits than its factorization.

40571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 40571 is about 201.4224416494. The cubic root of 40571 is about 34.3614833911.

The spelling of 40571 in words is "forty thousand, five hundred seventy-one".