5129218 has 4 divisors (see below), whose sum is σ = 7693830. Its totient is φ = 2564608.

The previous prime is 5129197. The next prime is 5129227. The reversal of 5129218 is 8129215.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8129215 = 5 ⋅1625843.

It can be written as a sum of positive squares in only one way, i.e., 4941729 + 187489 = 2223^2 + 433^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1282303 + ... + 1282306.

Almost surely, 2^5129218 is an apocalyptic number.

5129218 is a deficient number, since it is larger than the sum of its proper divisors (2564612).

5129218 is a wasteful number, since it uses less digits than its factorization.

5129218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564611.

The product of its digits is 1440, while the sum is 28.

The square root of 5129218 is about 2264.7776932847. Note that the first 3 decimals coincide. The cubic root of 5129218 is about 172.4581484971.

It can be divided in two parts, 512 and 9218, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 5129218 in words is "five million, one hundred twenty-nine thousand, two hundred eighteen".