5278510123 has 4 divisors (see below), whose sum is σ = 5352855408. Its totient is φ = 5204164840.

The previous prime is 5278510121. The next prime is 5278510129. The reversal of 5278510123 is 3210158725.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5278510123 - 2¹ = 5278510121 is a prime.

It is a super-2 number, since 2×5278510123² = 55725338237226950258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5278510121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37172536 + ... + 37172677.

It is an arithmetic number, because the mean of its divisors is an integer number (1338213852).

Almost surely, 2^5278510123 is an apocalyptic number.

5278510123 is a deficient number, since it is larger than the sum of its proper divisors (74345285).

5278510123 is an equidigital number, since it uses as much as digits as its factorization.

5278510123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74345284.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 5278510123 is about 72653.3558963383. The cubic root of 5278510123 is about 1741.1537381711.

Adding to 5278510123 its reverse (3210158725), we get a palindrome (8488668848).

The spelling of 5278510123 in words is "five billion, two hundred seventy-eight million, five hundred ten thousand, one hundred twenty-three".