206280553 has 10 divisors (see below), whose sum is σ = 214333970. Its totient is φ = 198492480.

The previous prime is 206280527. The next prime is 206280559. The reversal of 206280553 is 355082602.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 204833344 + 1447209 = 14312^2 + 1203^2 .

It is not a de Polignac number, because 206280553 - 2¹³ = 206272361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206280559) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2825725 + ... + 2825797.

It is an arithmetic number, because the mean of its divisors is an integer number (21433397).

Almost surely, 2^206280553 is an apocalyptic number.

It is an amenable number.

206280553 is a deficient number, since it is larger than the sum of its proper divisors (8053417).

206280553 is an frugal number, since it uses more digits than its factorization.

206280553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 206280553 is about 14362.4702958788. The cubic root of 206280553 is about 590.8620482851.

The spelling of 206280553 in words is "two hundred six million, two hundred eighty thousand, five hundred fifty-three".