553633645 has 16 divisors (see below), whose sum is σ = 705438720. Its totient is φ = 415669504.

The previous prime is 553633607. The next prime is 553633649. The reversal of 553633645 is 546336355.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 553633645 - 2⁷ = 553633517 is a prime.

It is a super-3 number, since 3×553633645³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 553633598 and 553633607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553633649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21444 + ... + 39586.

It is an arithmetic number, because the mean of its divisors is an integer number (44089920).

Almost surely, 2^553633645 is an apocalyptic number.

It is an amenable number.

553633645 is a deficient number, since it is larger than the sum of its proper divisors (151805075).

553633645 is a wasteful number, since it uses less digits than its factorization.

553633645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18524.

The product of its digits is 486000, while the sum is 40.

The square root of 553633645 is about 23529.4208386012. The cubic root of 553633645 is about 821.1216283885.

The spelling of 553633645 in words is "five hundred fifty-three million, six hundred thirty-three thousand, six hundred forty-five".