45143999 has 4 divisors (see below), whose sum is σ = 45158664. Its totient is φ = 45129336.

The previous prime is 45143971. The next prime is 45144007. The reversal of 45143999 is 99934154.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99934154 = 2 ⋅49967077.

It is a cyclic number.

It is not a de Polignac number, because 45143999 - 2⁸ = 45143743 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 (45143939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 737 + ... + 9530.

It is an arithmetic number, because the mean of its divisors is an integer number (11289666).

Almost surely, 2^45143999 is an apocalyptic number.

45143999 is a deficient number, since it is larger than the sum of its proper divisors (14665).

45143999 is a wasteful number, since it uses less digits than its factorization.

45143999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14664.

The product of its digits is 174960, while the sum is 44.

The square root of 45143999 is about 6718.9284115847. The cubic root of 45143999 is about 356.0683257949.

The spelling of 45143999 in words is "forty-five million, one hundred forty-three thousand, nine hundred ninety-nine".