45045242017 has 2 divisors, whose sum is σ = 45045242018. Its totient is φ = 45045242016.

The previous prime is 45045241987. The next prime is 45045242107. The reversal of 45045242017 is 71024254054.

Together with next prime (45045242107) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44893558161 + 151683856 = 211881^2 + 12316^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45045242017 is a prime.

It is not a weakly prime, because it can be changed into another prime (45045242117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22522621008 + 22522621009.

It is an arithmetic number, because the mean of its divisors is an integer number (22522621009).

Almost surely, 2^45045242017 is an apocalyptic number.

It is an amenable number.

45045242017 is a deficient number, since it is larger than the sum of its proper divisors (1).

45045242017 is an equidigital number, since it uses as much as digits as its factorization.

45045242017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44800, while the sum is 34.

The spelling of 45045242017 in words is "forty-five billion, forty-five million, two hundred forty-two thousand, seventeen".