55280303 has 8 divisors (see below), whose sum is σ = 60202800. Its totient is φ = 50453568.

The previous prime is 55280299. The next prime is 55280317. The reversal of 55280303 is 30308255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55280303 - 2² = 55280299 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55280333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22733 + ... + 25046.

It is an arithmetic number, because the mean of its divisors is an integer number (7525350).

Almost surely, 2^55280303 is an apocalyptic number.

55280303 is a deficient number, since it is larger than the sum of its proper divisors (4922497).

55280303 is a wasteful number, since it uses less digits than its factorization.

55280303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47881.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 55280303 is about 7435.0724946029. The cubic root of 55280303 is about 380.9401995319.

Adding to 55280303 its reverse (30308255), we get a palindrome (85588558).

The spelling of 55280303 in words is "fifty-five million, two hundred eighty thousand, three hundred three".