409553 has 4 divisors (see below), whose sum is σ = 420660. Its totient is φ = 398448.

The previous prime is 409543. The next prime is 409573. The reversal of 409553 is 355904.

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 200704 + 208849 = 448^2 + 457^2 .

It is a cyclic number.

It is not a de Polignac number, because 409553 - 2¹⁶ = 344017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5498 + ... + 5571.

It is an arithmetic number, because the mean of its divisors is an integer number (105165).

2⁴⁰⁹⁵⁵³ is an apocalyptic number.

It is an amenable number.

409553 is a deficient number, since it is larger than the sum of its proper divisors (11107).

409553 is a wasteful number, since it uses less digits than its factorization.

409553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11106.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 409553 is about 639.9632801966. The cubic root of 409553 is about 74.2625806735.

The spelling of 409553 in words is "four hundred nine thousand, five hundred fifty-three".