40051571 has 6 divisors (see below), whose sum is σ = 46590660. Its totient is φ = 34329876.

The previous prime is 40051559. The next prime is 40051573. The reversal of 40051571 is 17515004.

40051571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40051571 - 2¹⁰ = 40050547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40051573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 408641 + ... + 408738.

It is an arithmetic number, because the mean of its divisors is an integer number (7765110).

Almost surely, 2^40051571 is an apocalyptic number.

40051571 is a deficient number, since it is larger than the sum of its proper divisors (6539089).

40051571 is an equidigital number, since it uses as much as digits as its factorization.

40051571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817393 (or 817386 counting only the distinct ones).

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

The square root of 40051571 is about 6328.6310526053. The cubic root of 40051571 is about 342.1421014993.

Adding to 40051571 its reverse (17515004), we get a palindrome (57566575).

The spelling of 40051571 in words is "forty million, fifty-one thousand, five hundred seventy-one".