556133729 has 2 divisors, whose sum is σ = 556133730. Its totient is φ = 556133728.

The previous prime is 556133713. The next prime is 556133737. The reversal of 556133729 is 927331655.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 508592704 + 47541025 = 22552^2 + 6895^2 .

It is a cyclic number.

It is not a de Polignac number, because 556133729 - 2⁴ = 556133713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (556133789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278066864 + 278066865.

It is an arithmetic number, because the mean of its divisors is an integer number (278066865).

Almost surely, 2^556133729 is an apocalyptic number.

It is an amenable number.

556133729 is a deficient number, since it is larger than the sum of its proper divisors (1).

556133729 is an equidigital number, since it uses as much as digits as its factorization.

556133729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 170100, while the sum is 41.

The square root of 556133729 is about 23582.4877610485. The cubic root of 556133729 is about 822.3557722366.

The spelling of 556133729 in words is "five hundred fifty-six million, one hundred thirty-three thousand, seven hundred twenty-nine".