5151805 has 4 divisors (see below), whose sum is σ = 6182172. Its totient is φ = 4121440.

The previous prime is 5151791. The next prime is 5151823. The reversal of 5151805 is 5081515.

5151805 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, and also an emirpimes, since its reverse is a distinct semiprime: 5081515 = 5 ⋅1016303.

It can be written as a sum of positive squares in 2 ways, for example, as 2452356 + 2699449 = 1566^2 + 1643^2 .

It is not a de Polignac number, because 5151805 - 2⁷ = 5151677 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5151805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515176 + ... + 515185.

It is an arithmetic number, because the mean of its divisors is an integer number (1545543).

Almost surely, 2^5151805 is an apocalyptic number.

It is an amenable number.

5151805 is a deficient number, since it is larger than the sum of its proper divisors (1030367).

5151805 is a wasteful number, since it uses less digits than its factorization.

5151805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030366.

The product of its (nonzero) digits is 1000, while the sum is 25.

The square root of 5151805 is about 2269.7587977580. The cubic root of 5151805 is about 172.7109231146.

The spelling of 5151805 in words is "five million, one hundred fifty-one thousand, eight hundred five".