40251017 has 2 divisors, whose sum is σ = 40251018. Its totient is φ = 40251016.

The previous prime is 40251007. The next prime is 40251031. The reversal of 40251017 is 71015204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36675136 + 3575881 = 6056^2 + 1891^2 .

It is a cyclic number.

It is not a de Polignac number, because 40251017 - 2⁶ = 40250953 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40251017.

It is not a weakly prime, because it can be changed into another prime (40251007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20125508 + 20125509.

It is an arithmetic number, because the mean of its divisors is an integer number (20125509).

Almost surely, 2^40251017 is an apocalyptic number.

It is an amenable number.

40251017 is a deficient number, since it is larger than the sum of its proper divisors (1).

40251017 is an equidigital number, since it uses as much as digits as its factorization.

40251017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 40251017 is about 6344.3689205468. The cubic root of 40251017 is about 342.7090864624.

The spelling of 40251017 in words is "forty million, two hundred fifty-one thousand, seventeen".