553278609 has 24 divisors (see below), whose sum is σ = 861660072. Its totient is φ = 340081920.

The previous prime is 553278553. The next prime is 553278643. The reversal of 553278609 is 906872355.

It is a happy number.

553278609 is a `hidden beast` number, since 5 + 5 + 32 + 7 + 8 + 609 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 76947984 + 476330625 = 8772^2 + 21825^2 .

It is not a de Polignac number, because 553278609 - 2²⁴ = 536501393 is a prime.

It is a super-2 number, since 2×553278609² = 612234438353949762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (553278109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121909 + ... + 126365.

It is an arithmetic number, because the mean of its divisors is an integer number (35902503).

Almost surely, 2^553278609 is an apocalyptic number.

It is an amenable number.

553278609 is a deficient number, since it is larger than the sum of its proper divisors (308381463).

553278609 is a wasteful number, since it uses less digits than its factorization.

553278609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5537 (or 5534 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 553278609 is about 23521.8751165803. The cubic root of 553278609 is about 820.9460669978.

It can be divided in two parts, 55327 and 8609, that added together give a palindrome (63936).

The spelling of 553278609 in words is "five hundred fifty-three million, two hundred seventy-eight thousand, six hundred nine".