556143139 has 2 divisors, whose sum is σ = 556143140. Its totient is φ = 556143138.

The previous prime is 556143113. The next prime is 556143157. The reversal of 556143139 is 931341655.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556143139 - 2⁷ = 556143011 is a prime.

It is equal to p_29150686 and since 556143139 and 29150686 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 556143098 and 556143107.

It is not a weakly prime, because it can be changed into another prime (556143109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278071569 + 278071570.

It is an arithmetic number, because the mean of its divisors is an integer number (278071570).

Almost surely, 2^556143139 is an apocalyptic number.

556143139 is a deficient number, since it is larger than the sum of its proper divisors (1).

556143139 is an equidigital number, since it uses as much as digits as its factorization.

556143139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 37.

The square root of 556143139 is about 23582.6872726583. The cubic root of 556143139 is about 822.3604104041.

The spelling of 556143139 in words is "five hundred fifty-six million, one hundred forty-three thousand, one hundred thirty-nine".