555071638 has 12 divisors (see below), whose sum is σ = 908479908. Its totient is φ = 252255060.

The previous prime is 555071609. The next prime is 555071639. The reversal of 555071638 is 836170555.

It is a self number, because there is not a number n which added to its sum of digits gives 555071638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555071639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107995 + ... + 113017.

It is an arithmetic number, because the mean of its divisors is an integer number (75706659).

Almost surely, 2^555071638 is an apocalyptic number.

555071638 is a deficient number, since it is larger than the sum of its proper divisors (353408270).

555071638 is an frugal number, since it uses more digits than its factorization.

555071638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10059 (or 5036 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 40.

The square root of 555071638 is about 23559.9583615931. The cubic root of 555071638 is about 821.8319334429.

The spelling of 555071638 in words is "five hundred fifty-five million, seventy-one thousand, six hundred thirty-eight".