5172778 has 8 divisors (see below), whose sum is σ = 8356068. Its totient is φ = 2387424.

The previous prime is 5172767. The next prime is 5172787. The reversal of 5172778 is 8772715.

It can be written as a sum of positive squares in 2 ways, for example, as 5139289 + 33489 = 2267^2 + 183^2 .

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

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, 99451 + ... + 99502.

Almost surely, 2^5172778 is an apocalyptic number.

5172778 is a deficient number, since it is larger than the sum of its proper divisors (3183290).

5172778 is a wasteful number, since it uses less digits than its factorization.

5172778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198968.

The product of its digits is 27440, while the sum is 37.

The square root of 5172778 is about 2274.3741996426. The cubic root of 5172778 is about 172.9449745368.

The spelling of 5172778 in words is "five million, one hundred seventy-two thousand, seven hundred seventy-eight".