5155217 has 4 divisors (see below), whose sum is σ = 5280996. Its totient is φ = 5029440.

The previous prime is 5155193. The next prime is 5155219. The reversal of 5155217 is 7125515.

It is a happy number.

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 1635841 + 3519376 = 1279^2 + 1876^2 .

It is a cyclic number.

It is not a de Polignac number, because 5155217 - 2¹⁸ = 4893073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5155219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62828 + ... + 62909.

It is an arithmetic number, because the mean of its divisors is an integer number (1320249).

Almost surely, 2^5155217 is an apocalyptic number.

It is an amenable number.

5155217 is a deficient number, since it is larger than the sum of its proper divisors (125779).

5155217 is a wasteful number, since it uses less digits than its factorization.

5155217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125778.

The product of its digits is 1750, while the sum is 26.

The square root of 5155217 is about 2270.5102950658. The cubic root of 5155217 is about 172.7490430631.

The spelling of 5155217 in words is "five million, one hundred fifty-five thousand, two hundred seventeen".