5128605 has 12 divisors (see below), whose sum is σ = 8889660. Its totient is φ = 2735232.

The previous prime is 5128603. The next prime is 5128633. The reversal of 5128605 is 5068215.

5128605 is a `hidden beast` number, since 51 + 2 + 8 + 605 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3849444 + 1279161 = 1962^2 + 1131^2 .

It is not a de Polignac number, because 5128605 - 2¹ = 5128603 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5128603) 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 11 ways as a sum of consecutive naturals, for example, 56940 + ... + 57029.

It is an arithmetic number, because the mean of its divisors is an integer number (740805).

Almost surely, 2^5128605 is an apocalyptic number.

It is an amenable number.

5128605 is a deficient number, since it is larger than the sum of its proper divisors (3761055).

5128605 is a wasteful number, since it uses less digits than its factorization.

5128605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113980 (or 113977 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 5128605 is about 2264.6423558699. The cubic root of 5128605 is about 172.4512779854.

The spelling of 5128605 in words is "five million, one hundred twenty-eight thousand, six hundred five".