40065251 has 2 divisors, whose sum is σ = 40065252. Its totient is φ = 40065250.

The previous prime is 40065217. The next prime is 40065257. The reversal of 40065251 is 15256004.

40065251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40065251 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40065257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20032625 + 20032626.

It is an arithmetic number, because the mean of its divisors is an integer number (20032626).

Almost surely, 2^40065251 is an apocalyptic number.

40065251 is a deficient number, since it is larger than the sum of its proper divisors (1).

40065251 is an equidigital number, since it uses as much as digits as its factorization.

40065251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 40065251 is about 6329.7117627898. The cubic root of 40065251 is about 342.1810510423.

The spelling of 40065251 in words is "forty million, sixty-five thousand, two hundred fifty-one".