384553 has 4 divisors (see below), whose sum is σ = 414148. Its totient is φ = 354960.

The previous prime is 384547. The next prime is 384577. The reversal of 384553 is 355483.

384553 is nontrivially palindromic in base 12.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 166464 + 218089 = 408^2 + 467^2 .

It is a cyclic number.

It is not a de Polignac number, because 384553 - 2¹⁷ = 253481 is a prime.

It is an Ulam number.

It is a Duffinian number.

384553 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (384533) 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 3 ways as a sum of consecutive naturals, for example, 14778 + ... + 14803.

It is an arithmetic number, because the mean of its divisors is an integer number (103537).

2³⁸⁴⁵⁵³ is an apocalyptic number.

It is an amenable number.

384553 is a deficient number, since it is larger than the sum of its proper divisors (29595).

384553 is a wasteful number, since it uses less digits than its factorization.

384553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29594.

The product of its digits is 7200, while the sum is 28.

The square root of 384553 is about 620.1233748215. The cubic root of 384553 is about 72.7196982168.

The spelling of 384553 in words is "three hundred eighty-four thousand, five hundred fifty-three".