45165619 has 2 divisors, whose sum is σ = 45165620. Its totient is φ = 45165618.

The previous prime is 45165607. The next prime is 45165649. The reversal of 45165619 is 91656154.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45165619 - 2¹¹ = 45163571 is a prime.

It is a super-2 number, since 2×45165619² = 4079866279306322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45165649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22582809 + 22582810.

It is an arithmetic number, because the mean of its divisors is an integer number (22582810).

Almost surely, 2^45165619 is an apocalyptic number.

45165619 is a deficient number, since it is larger than the sum of its proper divisors (1).

45165619 is an equidigital number, since it uses as much as digits as its factorization.

45165619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 37.

The square root of 45165619 is about 6720.5371065117. The cubic root of 45165619 is about 356.1251585137.

The spelling of 45165619 in words is "forty-five million, one hundred sixty-five thousand, six hundred nineteen".