387200055 has 64 divisors (see below), whose sum is σ = 709751808. Its totient is φ = 178421760.

The previous prime is 387200027. The next prime is 387200059. The reversal of 387200055 is 550002783.

It is a happy number.

It is not a de Polignac number, because 387200055 - 2⁹ = 387199543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 387199995 and 387200031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387200059) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 975117 + ... + 975513.

It is an arithmetic number, because the mean of its divisors is an integer number (11089872).

Almost surely, 2^387200055 is an apocalyptic number.

387200055 is a deficient number, since it is larger than the sum of its proper divisors (322551753).

387200055 is a wasteful number, since it uses less digits than its factorization.

387200055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 387200055 is about 19677.3995995406. The cubic root of 387200055 is about 728.8617119488.

The spelling of 387200055 in words is "three hundred eighty-seven million, two hundred thousand, fifty-five".