45205019 has 2 divisors, whose sum is σ = 45205020. Its totient is φ = 45205018.

The previous prime is 45205003. The next prime is 45205067. The reversal of 45205019 is 91050254.

45205019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45205019 - 2⁴ = 45205003 is a prime.

It is a super-2 number, since 2×45205019² = 4086987485580722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45205079) 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, 22602509 + 22602510.

It is an arithmetic number, because the mean of its divisors is an integer number (22602510).

Almost surely, 2^45205019 is an apocalyptic number.

45205019 is a deficient number, since it is larger than the sum of its proper divisors (1).

45205019 is an equidigital number, since it uses as much as digits as its factorization.

45205019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 45205019 is about 6723.4677808405. The cubic root of 45205019 is about 356.2286830786.

The spelling of 45205019 in words is "forty-five million, two hundred five thousand, nineteen".