55020481 has 2 divisors, whose sum is σ = 55020482. Its totient is φ = 55020480.

The previous prime is 55020479. The next prime is 55020499. The reversal of 55020481 is 18402055.

55020481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54523456 + 497025 = 7384^2 + 705^2 .

It is a cyclic number.

It is not a de Polignac number, because 55020481 - 2¹ = 55020479 is a prime.

It is a super-2 number, since 2×55020481² = 6054506658942722, which contains 22 as substring.

Together with 55020479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55020461) 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 as a sum of consecutive naturals, namely, 27510240 + 27510241.

It is an arithmetic number, because the mean of its divisors is an integer number (27510241).

Almost surely, 2^55020481 is an apocalyptic number.

It is an amenable number.

55020481 is a deficient number, since it is larger than the sum of its proper divisors (1).

55020481 is an equidigital number, since it uses as much as digits as its factorization.

55020481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 55020481 is about 7417.5791873090. The cubic root of 55020481 is about 380.3424452296.

The spelling of 55020481 in words is "fifty-five million, twenty thousand, four hundred eighty-one".