556087139 has 2 divisors, whose sum is σ = 556087140. Its totient is φ = 556087138.

The previous prime is 556087099. The next prime is 556087157. The reversal of 556087139 is 931780655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556087139 - 2¹⁶ = 556021603 is a prime.

It is a super-2 number, since 2×556087139² = 618465812322410642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 556087139.

It is not a weakly prime, because it can be changed into another prime (556087039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278043569 + 278043570.

It is an arithmetic number, because the mean of its divisors is an integer number (278043570).

Almost surely, 2^556087139 is an apocalyptic number.

556087139 is a deficient number, since it is larger than the sum of its proper divisors (1).

556087139 is an equidigital number, since it uses as much as digits as its factorization.

556087139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 556087139 is about 23581.4999310900. The cubic root of 556087139 is about 822.3328073612.

The spelling of 556087139 in words is "five hundred fifty-six million, eighty-seven thousand, one hundred thirty-nine".