553646641 has 4 divisors (see below), whose sum is σ = 554076784. Its totient is φ = 553216500.

The previous prime is 553646623. The next prime is 553646663. The reversal of 553646641 is 146646355.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-553646641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 553646594 and 553646603.

It is not an unprimeable number, because it can be changed into a prime (553646671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213135 + ... + 215716.

It is an arithmetic number, because the mean of its divisors is an integer number (138519196).

Almost surely, 2^553646641 is an apocalyptic number.

It is an amenable number.

553646641 is a deficient number, since it is larger than the sum of its proper divisors (430143).

553646641 is a wasteful number, since it uses less digits than its factorization.

553646641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430142.

The product of its digits is 259200, while the sum is 40.

The square root of 553646641 is about 23529.6970018740. The cubic root of 553646641 is about 821.1280533432.

The spelling of 553646641 in words is "five hundred fifty-three million, six hundred forty-six thousand, six hundred forty-one".