55130533 has 4 divisors (see below), whose sum is σ = 58032160. Its totient is φ = 52228908.

The previous prime is 55130531. The next prime is 55130539. The reversal of 55130533 is 33503155.

It is a happy number.

55130533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 55130533 - 2¹ = 55130531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55130498 and 55130507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55130531) 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 3 ways as a sum of consecutive naturals, for example, 1450785 + ... + 1450822.

It is an arithmetic number, because the mean of its divisors is an integer number (14508040).

Almost surely, 2^55130533 is an apocalyptic number.

It is an amenable number.

55130533 is a deficient number, since it is larger than the sum of its proper divisors (2901627).

55130533 is a wasteful number, since it uses less digits than its factorization.

55130533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2901626.

The product of its (nonzero) digits is 3375, while the sum is 25.

The square root of 55130533 is about 7424.9938047112. The cubic root of 55130533 is about 380.5958634067.

Adding to 55130533 its reverse (33503155), we get a palindrome (88633688).

The spelling of 55130533 in words is "fifty-five million, one hundred thirty thousand, five hundred thirty-three".