155068388 has 6 divisors (see below), whose sum is σ = 271369686. Its totient is φ = 77534192.

The previous prime is 155068387. The next prime is 155068391. The reversal of 155068388 is 883860551.

It can be written as a sum of positive squares in only one way, i.e., 96668224 + 58400164 = 9832^2 + 7642^2 .

It is not an unprimeable number, because it can be changed into a prime (155068387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19383545 + ... + 19383552.

It is an arithmetic number, because the mean of its divisors is an integer number (45228281).

Almost surely, 2^155068388 is an apocalyptic number.

It is an amenable number.

155068388 is a deficient number, since it is larger than the sum of its proper divisors (116301298).

155068388 is a wasteful number, since it uses less digits than its factorization.

155068388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38767101 (or 38767099 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 44.

The square root of 155068388 is about 12452.6458232779. The cubic root of 155068388 is about 537.2475257748.

The spelling of 155068388 in words is "one hundred fifty-five million, sixty-eight thousand, three hundred eighty-eight".