5207645 has 4 divisors (see below), whose sum is σ = 6249180. Its totient is φ = 4166112.

The previous prime is 5207633. The next prime is 5207677. The reversal of 5207645 is 5467025.

5207645 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 1898884 + 3308761 = 1378^2 + 1819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5207645 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520760 + ... + 520769.

It is an arithmetic number, because the mean of its divisors is an integer number (1562295).

Almost surely, 2^5207645 is an apocalyptic number.

It is an amenable number.

5207645 is a deficient number, since it is larger than the sum of its proper divisors (1041535).

5207645 is a wasteful number, since it uses less digits than its factorization.

5207645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041534.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 5207645 is about 2282.0265116777. The cubic root of 5207645 is about 173.3326820324.

The spelling of 5207645 in words is "five million, two hundred seven thousand, six hundred forty-five".