5251665 has 8 divisors (see below), whose sum is σ = 8402688. Its totient is φ = 2800880.

The previous prime is 5251663. The next prime is 5251711. The reversal of 5251665 is 5661525.

5251665 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5251665 - 2¹ = 5251663 is a prime.

5251665 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5251663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175041 + ... + 175070.

It is an arithmetic number, because the mean of its divisors is an integer number (1050336).

Almost surely, 2^5251665 is an apocalyptic number.

It is an amenable number.

5251665 is a deficient number, since it is larger than the sum of its proper divisors (3151023).

5251665 is a wasteful number, since it uses less digits than its factorization.

5251665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350119.

The product of its digits is 9000, while the sum is 30.

The square root of 5251665 is about 2291.6511514626. The cubic root of 5251665 is about 173.8197035860.

The spelling of 5251665 in words is "five million, two hundred fifty-one thousand, six hundred sixty-five".