5215145 has 8 divisors (see below), whose sum is σ = 6739656. Its totient is φ = 3851136.

The previous prime is 5215127. The next prime is 5215151. The reversal of 5215145 is 5415125.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1098304 + 4116841 = 1048^2 + 2029^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 5215145 - 2⁶ = 5215081 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 5215145.

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 7 ways as a sum of consecutive naturals, for example, 40052 + ... + 40181.

It is an arithmetic number, because the mean of its divisors is an integer number (842457).

Almost surely, 2^5215145 is an apocalyptic number.

It is an amenable number.

5215145 is a deficient number, since it is larger than the sum of its proper divisors (1524511).

5215145 is a wasteful number, since it uses less digits than its factorization.

5215145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80251.

The product of its digits is 1000, while the sum is 23.

The square root of 5215145 is about 2283.6691967095. The cubic root of 5215145 is about 173.4158528024.

The spelling of 5215145 in words is "five million, two hundred fifteen thousand, one hundred forty-five".