554138729 has 2 divisors, whose sum is σ = 554138730. Its totient is φ = 554138728.

The previous prime is 554138707. The next prime is 554138737. The reversal of 554138729 is 927831455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 543589225 + 10549504 = 23315^2 + 3248^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-554138729 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 554138729.

It is not a weakly prime, because it can be changed into another prime (554132729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277069364 + 277069365.

It is an arithmetic number, because the mean of its divisors is an integer number (277069365).

Almost surely, 2^554138729 is an apocalyptic number.

It is an amenable number.

554138729 is a deficient number, since it is larger than the sum of its proper divisors (1).

554138729 is an equidigital number, since it uses as much as digits as its factorization.

554138729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 44.

The square root of 554138729 is about 23540.1514226226. The cubic root of 554138729 is about 821.3712575685.

The spelling of 554138729 in words is "five hundred fifty-four million, one hundred thirty-eight thousand, seven hundred twenty-nine".