5217780279 has 16 divisors (see below), whose sum is σ = 6989492448. Its totient is φ = 3462316032.

The previous prime is 5217780277. The next prime is 5217780307. The reversal of 5217780279 is 9720877125.

It is a happy number.

It is not a de Polignac number, because 5217780279 - 2¹ = 5217780277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5217780277) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1877539 + ... + 1880315.

It is an arithmetic number, because the mean of its divisors is an integer number (436843278).

Almost surely, 2^5217780279 is an apocalyptic number.

5217780279 is a deficient number, since it is larger than the sum of its proper divisors (1771712169).

5217780279 is a wasteful number, since it uses less digits than its factorization.

5217780279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5474.

The product of its (nonzero) digits is 493920, while the sum is 48.

The square root of 5217780279 is about 72234.2043563851. The cubic root of 5217780279 is about 1734.4505762804.

The spelling of 5217780279 in words is "five billion, two hundred seventeen million, seven hundred eighty thousand, two hundred seventy-nine".