155388648 has 32 divisors (see below), whose sum is σ = 388814400. Its totient is φ = 51750528.

The previous prime is 155388643. The next prime is 155388661. The reversal of 155388648 is 846883551.

It is a junction number, because it is equal to n+sod(n) for n = 155388597 and 155388606.

It is not an unprimeable number, because it can be changed into a prime (155388643) 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 in 7 ways as a sum of consecutive naturals, for example, 35340 + ... + 39492.

It is an arithmetic number, because the mean of its divisors is an integer number (12150450).

Almost surely, 2^155388648 is an apocalyptic number.

It is an amenable number.

155388648 is an abundant number, since it is smaller than the sum of its proper divisors (233425752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155388648 is a wasteful number, since it uses less digits than its factorization.

155388648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5721 (or 5717 counting only the distinct ones).

The product of its digits is 921600, while the sum is 48.

The square root of 155388648 is about 12465.4983053226. The cubic root of 155388648 is about 537.6171273862.

The spelling of 155388648 in words is "one hundred fifty-five million, three hundred eighty-eight thousand, six hundred forty-eight".