40257171 has 6 divisors (see below), whose sum is σ = 58149260. Its totient is φ = 26838108.

The previous prime is 40257167. The next prime is 40257193. The reversal of 40257171 is 17175204.

It is not a de Polignac number, because 40257171 - 2² = 40257167 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40257271) 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, 2236501 + ... + 2236518.

Almost surely, 2^40257171 is an apocalyptic number.

40257171 is a deficient number, since it is larger than the sum of its proper divisors (17892089).

40257171 is a wasteful number, since it uses less digits than its factorization.

40257171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4473025 (or 4473022 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 40257171 is about 6344.8538990271. The cubic root of 40257171 is about 342.7265512322.

The spelling of 40257171 in words is "forty million, two hundred fifty-seven thousand, one hundred seventy-one".