5515123223 has 2 divisors, whose sum is σ = 5515123224. Its totient is φ = 5515123222.

The previous prime is 5515123193. The next prime is 5515123259. The reversal of 5515123223 is 3223215155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5515123223 - 2⁸ = 5515122967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5515120223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2757561611 + 2757561612.

It is an arithmetic number, because the mean of its divisors is an integer number (2757561612).

Almost surely, 2^5515123223 is an apocalyptic number.

5515123223 is a deficient number, since it is larger than the sum of its proper divisors (1).

5515123223 is an equidigital number, since it uses as much as digits as its factorization.

5515123223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9000, while the sum is 29.

The square root of 5515123223 is about 74263.8756260404. The cubic root of 5515123223 is about 1766.7905732525.

Adding to 5515123223 its reverse (3223215155), we get a palindrome (8738338378).

The spelling of 5515123223 in words is "five billion, five hundred fifteen million, one hundred twenty-three thousand, two hundred twenty-three".