5251666 has 8 divisors (see below), whose sum is σ = 9002880. Its totient is φ = 2250708.

The previous prime is 5251663. The next prime is 5251711. The reversal of 5251666 is 6661525.

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

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 3 ways as a sum of consecutive naturals, for example, 187546 + ... + 187573.

It is an arithmetic number, because the mean of its divisors is an integer number (1125360).

Almost surely, 2^5251666 is an apocalyptic number.

5251666 is a deficient number, since it is larger than the sum of its proper divisors (3751214).

5251666 is a wasteful number, since it uses less digits than its factorization.

5251666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375128.

The product of its digits is 10800, while the sum is 31.

The square root of 5251666 is about 2291.6513696459. The cubic root of 5251666 is about 173.8197146187.

The spelling of 5251666 in words is "five million, two hundred fifty-one thousand, six hundred sixty-six".