40271257 has 4 divisors (see below), whose sum is σ = 43369060. Its totient is φ = 37173456.

The previous prime is 40271251. The next prime is 40271291. The reversal of 40271257 is 75217204.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26050816 + 14220441 = 5104^2 + 3771^2 .

It is a cyclic number.

It is not a de Polignac number, because 40271257 - 2¹⁵ = 40238489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40271251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1548882 + ... + 1548907.

It is an arithmetic number, because the mean of its divisors is an integer number (10842265).

Almost surely, 2^40271257 is an apocalyptic number.

It is an amenable number.

40271257 is a deficient number, since it is larger than the sum of its proper divisors (3097803).

40271257 is a wasteful number, since it uses less digits than its factorization.

40271257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3097802.

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

The square root of 40271257 is about 6345.9638353839. The cubic root of 40271257 is about 342.7665199560.

The spelling of 40271257 in words is "forty million, two hundred seventy-one thousand, two hundred fifty-seven".