5251109 has 4 divisors (see below), whose sum is σ = 5323116. Its totient is φ = 5179104.

The previous prime is 5251097. The next prime is 5251123. The reversal of 5251109 is 9011525.

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 1060900 + 4190209 = 1030^2 + 2047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5251109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5251139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35894 + ... + 36039.

It is an arithmetic number, because the mean of its divisors is an integer number (1330779).

Almost surely, 2^5251109 is an apocalyptic number.

It is an amenable number.

5251109 is a deficient number, since it is larger than the sum of its proper divisors (72007).

5251109 is an equidigital number, since it uses as much as digits as its factorization.

5251109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72006.

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 5251109 is about 2291.5298383394. The cubic root of 5251109 is about 173.8135692035.

The spelling of 5251109 in words is "five million, two hundred fifty-one thousand, one hundred nine".