387550 has 24 divisors (see below), whose sum is σ = 754416. Its totient is φ = 147840.

The previous prime is 387529. The next prime is 387551. The reversal of 387550 is 55783.

387550 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387551) by changing a digit.

387550 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 11 ways as a sum of consecutive naturals, for example, 982 + ... + 1318.

It is an arithmetic number, because the mean of its divisors is an integer number (31434).

387550 is a Friedman number, since it can be written as 5^8-3075, using all its digits and the basic arithmetic operations.

2³⁸⁷⁵⁵⁰ is an apocalyptic number.

387550 is a deficient number, since it is larger than the sum of its proper divisors (366866).

387550 is a wasteful number, since it uses less digits than its factorization.

387550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 387550 is about 622.5351395705. The cubic root of 387550 is about 72.9081223548.

The spelling of 387550 in words is "three hundred eighty-seven thousand, five hundred fifty".