553865616 has 30 divisors (see below), whose sum is σ = 1550054870. Its totient is φ = 184621824.

The previous prime is 553865581. The next prime is 553865621. The reversal of 553865616 is 616568355.

553865616 is a `hidden beast` number, since 5 + 5 + 3 + 86 + 561 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 343731600 + 210134016 = 18540^2 + 14496^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1923001 + ... + 1923288.

Almost surely, 2^553865616 is an apocalyptic number.

It is an amenable number.

553865616 is an abundant number, since it is smaller than the sum of its proper divisors (996189254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

553865616 is a wasteful number, since it uses less digits than its factorization.

553865616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3846303 (or 3846294 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 553865616 is about 23534.3497042090. The cubic root of 553865616 is about 821.2362949556.

The spelling of 553865616 in words is "five hundred fifty-three million, eight hundred sixty-five thousand, six hundred sixteen".