45128159 has 4 divisors (see below), whose sum is σ = 45146904. Its totient is φ = 45109416.

The previous prime is 45128129. The next prime is 45128189. The reversal of 45128159 is 95182154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95182154 = 2 ⋅47591077.

It is an interprime number because it is at equal distance from previous prime (45128129) and next prime (45128189).

It is a cyclic number.

It is not a de Polignac number, because 45128159 - 2²⁰ = 44079583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45128119) 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, 5117 + ... + 10790.

It is an arithmetic number, because the mean of its divisors is an integer number (11286726).

Almost surely, 2^45128159 is an apocalyptic number.

45128159 is a deficient number, since it is larger than the sum of its proper divisors (18745).

45128159 is a wasteful number, since it uses less digits than its factorization.

45128159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18744.

The product of its digits is 14400, while the sum is 35.

The square root of 45128159 is about 6717.7495487700. The cubic root of 45128159 is about 356.0266755040.

The spelling of 45128159 in words is "forty-five million, one hundred twenty-eight thousand, one hundred fifty-nine".