40057471 has 2 divisors, whose sum is σ = 40057472. Its totient is φ = 40057470.

The previous prime is 40057469. The next prime is 40057477. The reversal of 40057471 is 17475004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40057471 - 2¹ = 40057469 is a prime.

It is a super-3 number, since 3×40057471³ (a number of 24 digits) contains 333 as substring.

Together with 40057469, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40057477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20028735 + 20028736.

It is an arithmetic number, because the mean of its divisors is an integer number (20028736).

Almost surely, 2^40057471 is an apocalyptic number.

40057471 is a deficient number, since it is larger than the sum of its proper divisors (1).

40057471 is an equidigital number, since it uses as much as digits as its factorization.

40057471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 40057471 is about 6329.0971710031. The cubic root of 40057471 is about 342.1589010008.

It can be divided in two parts, 4005 and 7471, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 40057471 in words is "forty million, fifty-seven thousand, four hundred seventy-one".