45190665 has 24 divisors (see below), whose sum is σ = 84357000. Its totient is φ = 22247424.

The previous prime is 45190619. The next prime is 45190667. The reversal of 45190665 is 56609154.

It can be written as a sum of positive squares in 4 ways, for example, as 2732409 + 42458256 = 1653^2 + 6516^2 .

It is not a de Polignac number, because 45190665 - 2⁶ = 45190601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45190667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38040 + ... + 39209.

It is an arithmetic number, because the mean of its divisors is an integer number (3514875).

Almost surely, 2^45190665 is an apocalyptic number.

45190665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45190665 is a deficient number, since it is larger than the sum of its proper divisors (39166335).

45190665 is a wasteful number, since it uses less digits than its factorization.

45190665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77273 (or 77270 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 45190665 is about 6722.4002409854. The cubic root of 45190665 is about 356.1909745237.

The spelling of 45190665 in words is "forty-five million, one hundred ninety thousand, six hundred sixty-five".