5128345 has 4 divisors (see below), whose sum is σ = 6154020. Its totient is φ = 4102672.

The previous prime is 5128337. The next prime is 5128349. The reversal of 5128345 is 5438215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1430416 + 3697929 = 1196^2 + 1923^2 .

It is a cyclic number.

It is not a de Polignac number, because 5128345 - 2³ = 5128337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5128349) 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, 512830 + ... + 512839.

It is an arithmetic number, because the mean of its divisors is an integer number (1538505).

Almost surely, 2^5128345 is an apocalyptic number.

It is an amenable number.

5128345 is a deficient number, since it is larger than the sum of its proper divisors (1025675).

5128345 is a wasteful number, since it uses less digits than its factorization.

5128345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025674.

The product of its digits is 4800, while the sum is 28.

The square root of 5128345 is about 2264.5849509347. The cubic root of 5128345 is about 172.4483637368.

The spelling of 5128345 in words is "five million, one hundred twenty-eight thousand, three hundred forty-five".