550012139 has 2 divisors, whose sum is σ = 550012140. Its totient is φ = 550012138.

The previous prime is 550012093. The next prime is 550012181. The reversal of 550012139 is 931210055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 550012139 - 2²⁸ = 281576683 is a prime.

It is not a weakly prime, because it can be changed into another prime (550012039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275006069 + 275006070.

It is an arithmetic number, because the mean of its divisors is an integer number (275006070).

Almost surely, 2^550012139 is an apocalyptic number.

550012139 is a deficient number, since it is larger than the sum of its proper divisors (1).

550012139 is an equidigital number, since it uses as much as digits as its factorization.

550012139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 550012139 is about 23452.3376020387. The cubic root of 550012139 is about 819.3272982781.

The spelling of 550012139 in words is "five hundred fifty million, twelve thousand, one hundred thirty-nine".