55282281 has 4 divisors (see below), whose sum is σ = 73709712. Its totient is φ = 36854852.

The previous prime is 55282259. The next prime is 55282289. The reversal of 55282281 is 18228255.

55282281 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 55282281 - 2¹⁴ = 55265897 is a prime.

It is a super-2 number, since 2×55282281² = 6112261185125922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55282289) 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, 9213711 + ... + 9213716.

It is an arithmetic number, because the mean of its divisors is an integer number (18427428).

Almost surely, 2^55282281 is an apocalyptic number.

It is an amenable number.

55282281 is a deficient number, since it is larger than the sum of its proper divisors (18427431).

55282281 is a wasteful number, since it uses less digits than its factorization.

55282281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18427430.

The product of its digits is 12800, while the sum is 33.

The square root of 55282281 is about 7435.2055116184. The cubic root of 55282281 is about 380.9447429870.

The spelling of 55282281 in words is "fifty-five million, two hundred eighty-two thousand, two hundred eighty-one".