55280533 has 16 divisors (see below), whose sum is σ = 71147520. Its totient is φ = 41684400.

The previous prime is 55280531. The next prime is 55280539. The reversal of 55280533 is 33508255.

55280533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55280533 - 2¹ = 55280531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55280495 and 55280504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55280531) 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 15 ways as a sum of consecutive naturals, for example, 9193 + ... + 13966.

It is an arithmetic number, because the mean of its divisors is an integer number (4446720).

Almost surely, 2^55280533 is an apocalyptic number.

It is an amenable number.

55280533 is a deficient number, since it is larger than the sum of its proper divisors (15866987).

55280533 is a wasteful number, since it uses less digits than its factorization.

55280533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23208.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 55280533 is about 7435.0879618200. The cubic root of 55280533 is about 380.9407278462.

Adding to 55280533 its reverse (33508255), we get a palindrome (88788788).

The spelling of 55280533 in words is "fifty-five million, two hundred eighty thousand, five hundred thirty-three".