555387129049 has 3 divisors (see below), whose sum is σ = 555387874293. Its totient is φ = 555386383806.

The previous prime is 555387129029. The next prime is 555387129061. The reversal of 555387129049 is 940921783555.

The square root of 555387129049 is 745243.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-555387129049 is a prime.

It is a super-2 number, since 2×555387129049² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 555387128984 and 555387129002.

It is not an unprimeable number, because it can be changed into a prime (555387129029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 372622 + ... + 1117864.

It is an arithmetic number, because the mean of its divisors is an integer number (185129291431).

Almost surely, 2^555387129049 is an apocalyptic number.

555387129049 is the 745243-rd square number.

555387129049 is the 372622-nd centered octagonal number.

It is an amenable number.

555387129049 is a deficient number, since it is larger than the sum of its proper divisors (745244).

555387129049 is an frugal number, since it uses more digits than its factorization.

555387129049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490486 (or 745243 counting only the distinct ones).

The product of its (nonzero) digits is 13608000, while the sum is 58.

The spelling of 555387129049 in words is "five hundred fifty-five billion, three hundred eighty-seven million, one hundred twenty-nine thousand, forty-nine".