45165019 has 4 divisors (see below), whose sum is σ = 45179200. Its totient is φ = 45150840.

The previous prime is 45165013. The next prime is 45165023. The reversal of 45165019 is 91056154.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 45165019 - 2⁹ = 45164507 is a prime.

It is a super-2 number, since 2×45165019² = 4079757882540722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45165013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157 + ... + 9505.

It is an arithmetic number, because the mean of its divisors is an integer number (11294800).

Almost surely, 2^45165019 is an apocalyptic number.

45165019 is a deficient number, since it is larger than the sum of its proper divisors (14181).

45165019 is an equidigital number, since it uses as much as digits as its factorization.

45165019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14180.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 45165019 is about 6720.4924670741. The cubic root of 45165019 is about 356.1235815322.

The spelling of 45165019 in words is "forty-five million, one hundred sixty-five thousand, nineteen".