55353643 has 2 divisors, whose sum is σ = 55353644. Its totient is φ = 55353642.

The previous prime is 55353629. The next prime is 55353667. The reversal of 55353643 is 34635355.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55353643 - 2⁵ = 55353611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55353599 and 55353608.

It is not a weakly prime, because it can be changed into another prime (55353673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27676821 + 27676822.

It is an arithmetic number, because the mean of its divisors is an integer number (27676822).

Almost surely, 2^55353643 is an apocalyptic number.

55353643 is a deficient number, since it is larger than the sum of its proper divisors (1).

55353643 is an equidigital number, since it uses as much as digits as its factorization.

55353643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81000, while the sum is 34.

The square root of 55353643 is about 7440.0028897844. The cubic root of 55353643 is about 381.1085886729.

Adding to 55353643 its reverse (34635355), we get a palindrome (89988998).

The spelling of 55353643 in words is "fifty-five million, three hundred fifty-three thousand, six hundred forty-three".