40365251 has 2 divisors, whose sum is σ = 40365252. Its totient is φ = 40365250.

The previous prime is 40365217. The next prime is 40365257. The reversal of 40365251 is 15256304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40365251 - 2²² = 36170947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40365251.

It is not a weakly prime, because it can be changed into another prime (40365257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20182625 + 20182626.

It is an arithmetic number, because the mean of its divisors is an integer number (20182626).

Almost surely, 2^40365251 is an apocalyptic number.

40365251 is a deficient number, since it is larger than the sum of its proper divisors (1).

40365251 is an equidigital number, since it uses as much as digits as its factorization.

40365251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 40365251 is about 6353.3653287057. The cubic root of 40365251 is about 343.0329876163.

The spelling of 40365251 in words is "forty million, three hundred sixty-five thousand, two hundred fifty-one".