385555 has 8 divisors (see below), whose sum is σ = 478800. Its totient is φ = 297696.

The previous prime is 385537. The next prime is 385559. The reversal of 385555 is 555583.

385555 = 101² + 102² + ... + 129².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385555 is a prime.

385555 is a modest number, since divided by 555 gives 385 as remainder.

It is not an unprimeable number, because it can be changed into a prime (385559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1185 + ... + 1474.

It is an arithmetic number, because the mean of its divisors is an integer number (59850).

2³⁸⁵⁵⁵⁵ is an apocalyptic number.

385555 is a deficient number, since it is larger than the sum of its proper divisors (93245).

385555 is a wasteful number, since it uses less digits than its factorization.

385555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2693.

The product of its digits is 15000, while the sum is 31.

The square root of 385555 is about 620.9307529830. The cubic root of 385555 is about 72.7828034695.

It can be divided in two parts, 3 and 85555, that added together give a palindrome (85558).

The spelling of 385555 in words is "three hundred eighty-five thousand, five hundred fifty-five".