555138343 has 8 divisors (see below), whose sum is σ = 570449312. Its totient is φ = 539843616.

The previous prime is 555138277. The next prime is 555138347. The reversal of 555138343 is 343831555.

555138343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-555138343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555138347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104221 + ... + 109417.

It is an arithmetic number, because the mean of its divisors is an integer number (71306164).

Almost surely, 2^555138343 is an apocalyptic number.

555138343 is a deficient number, since it is larger than the sum of its proper divisors (15310969).

555138343 is a wasteful number, since it uses less digits than its factorization.

555138343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8121.

The product of its digits is 108000, while the sum is 37.

The square root of 555138343 is about 23561.3739624836. The cubic root of 555138343 is about 821.8648529794.

Adding to 555138343 its reverse (343831555), we get a palindrome (898969898).

The spelling of 555138343 in words is "five hundred fifty-five million, one hundred thirty-eight thousand, three hundred forty-three".