5128569 has 8 divisors (see below), whose sum is σ = 7597920. Its totient is φ = 3419028.

The previous prime is 5128553. The next prime is 5128573. The reversal of 5128569 is 9658215.

It is a happy number.

5128569 is a `hidden beast` number, since 512 + 85 + 69 = 666.

It is not a de Polignac number, because 5128569 - 2⁴ = 5128553 is a prime.

It is a super-2 number, since 2×5128569² = 52604439975522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5128549) 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 7 ways as a sum of consecutive naturals, for example, 94947 + ... + 95000.

It is an arithmetic number, because the mean of its divisors is an integer number (949740).

Almost surely, 2^5128569 is an apocalyptic number.

It is an amenable number.

5128569 is a deficient number, since it is larger than the sum of its proper divisors (2469351).

5128569 is a wasteful number, since it uses less digits than its factorization.

5128569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189956 (or 189950 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 5128569 is about 2264.6344075811. The cubic root of 5128569 is about 172.4508744799.

The spelling of 5128569 in words is "five million, one hundred twenty-eight thousand, five hundred sixty-nine".