553903317 has 24 divisors (see below), whose sum is σ = 894112128. Its totient is φ = 327508800.

The previous prime is 553903309. The next prime is 553903321. The reversal of 553903317 is 713309355.

It is a happy number.

553903317 is a `hidden beast` number, since 553 + 90 + 3 + 3 + 17 = 666.

It is not a de Polignac number, because 553903317 - 2³ = 553903309 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553903307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64173 + ... + 72290.

It is an arithmetic number, because the mean of its divisors is an integer number (37254672).

Almost surely, 2^553903317 is an apocalyptic number.

It is an amenable number.

553903317 is a deficient number, since it is larger than the sum of its proper divisors (340208811).

553903317 is a wasteful number, since it uses less digits than its factorization.

553903317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136521 (or 136518 counting only the distinct ones).

The product of its (nonzero) digits is 42525, while the sum is 36.

The square root of 553903317 is about 23535.1506687338. The cubic root of 553903317 is about 821.2549280717.

The spelling of 553903317 in words is "five hundred fifty-three million, nine hundred three thousand, three hundred seventeen".