40965571 has 2 divisors, whose sum is σ = 40965572. Its totient is φ = 40965570.

The previous prime is 40965527. The next prime is 40965607. The reversal of 40965571 is 17556904.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40965571 - 2⁷ = 40965443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40965571.

It is not a weakly prime, because it can be changed into another prime (40965511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20482785 + 20482786.

It is an arithmetic number, because the mean of its divisors is an integer number (20482786).

Almost surely, 2^40965571 is an apocalyptic number.

40965571 is a deficient number, since it is larger than the sum of its proper divisors (1).

40965571 is an equidigital number, since it uses as much as digits as its factorization.

40965571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 40965571 is about 6400.4352195769. The cubic root of 40965571 is about 344.7251777639.

The spelling of 40965571 in words is "forty million, nine hundred sixty-five thousand, five hundred seventy-one".