40105571 has 6 divisors (see below), whose sum is σ = 44083116. Its totient is φ = 36459500.

The previous prime is 40105553. The next prime is 40105619. The reversal of 40105571 is 17550104.

It is not a de Polignac number, because 40105571 - 2¹⁴ = 40089187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40102571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 165605 + ... + 165846.

It is an arithmetic number, because the mean of its divisors is an integer number (7347186).

Almost surely, 2^40105571 is an apocalyptic number.

40105571 is a deficient number, since it is larger than the sum of its proper divisors (3977545).

40105571 is a wasteful number, since it uses less digits than its factorization.

40105571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331473 (or 331462 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 40105571 is about 6332.8959410368. The cubic root of 40105571 is about 342.2957981449.

Adding to 40105571 its reverse (17550104), we get a palindrome (57655675).

The spelling of 40105571 in words is "forty million, one hundred five thousand, five hundred seventy-one".