155558068 has 6 divisors (see below), whose sum is σ = 272226626. Its totient is φ = 77779032.

The previous prime is 155558063. The next prime is 155558069. The reversal of 155558068 is 860855551.

It can be written as a sum of positive squares in only one way, i.e., 87198244 + 68359824 = 9338^2 + 8268^2 .

It is a super-3 number, since 3×155558068³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155558063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19444755 + ... + 19444762.

Almost surely, 2^155558068 is an apocalyptic number.

It is an amenable number.

155558068 is a deficient number, since it is larger than the sum of its proper divisors (116668558).

155558068 is a wasteful number, since it uses less digits than its factorization.

155558068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38889521 (or 38889519 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 43.

The square root of 155558068 is about 12472.2920106931. The cubic root of 155558068 is about 537.8124441234.

The spelling of 155558068 in words is "one hundred fifty-five million, five hundred fifty-eight thousand, sixty-eight".