40571887 has 2 divisors, whose sum is σ = 40571888. Its totient is φ = 40571886.

The previous prime is 40571863. The next prime is 40571903. The reversal of 40571887 is 78817504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40571887 - 2¹¹ = 40569839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40571827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20285943 + 20285944.

It is an arithmetic number, because the mean of its divisors is an integer number (20285944).

Almost surely, 2^40571887 is an apocalyptic number.

40571887 is a deficient number, since it is larger than the sum of its proper divisors (1).

40571887 is an equidigital number, since it uses as much as digits as its factorization.

40571887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 40571887 is about 6369.6065027598. The cubic root of 40571887 is about 343.6173380321.

The spelling of 40571887 in words is "forty million, five hundred seventy-one thousand, eight hundred eighty-seven".