550040123 has 2 divisors, whose sum is σ = 550040124. Its totient is φ = 550040122.

The previous prime is 550040093. The next prime is 550040131. The reversal of 550040123 is 321040055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 550040123 - 2¹⁴ = 550023739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 550040095 and 550040104.

It is not a weakly prime, because it can be changed into another prime (550040723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275020061 + 275020062.

It is an arithmetic number, because the mean of its divisors is an integer number (275020062).

Almost surely, 2^550040123 is an apocalyptic number.

550040123 is a deficient number, since it is larger than the sum of its proper divisors (1).

550040123 is an equidigital number, since it uses as much as digits as its factorization.

550040123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 550040123 is about 23452.9342087509. The cubic root of 550040123 is about 819.3411935267.

Adding to 550040123 its reverse (321040055), we get a palindrome (871080178).

The spelling of 550040123 in words is "five hundred fifty million, forty thousand, one hundred twenty-three".