55305427 has 2 divisors, whose sum is σ = 55305428. Its totient is φ = 55305426.

The previous prime is 55305413. The next prime is 55305431. The reversal of 55305427 is 72450355.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55305427 - 2¹¹ = 55303379 is a prime.

It is not a weakly prime, because it can be changed into another prime (55305487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27652713 + 27652714.

It is an arithmetic number, because the mean of its divisors is an integer number (27652714).

Almost surely, 2^55305427 is an apocalyptic number.

55305427 is a deficient number, since it is larger than the sum of its proper divisors (1).

55305427 is an equidigital number, since it uses as much as digits as its factorization.

55305427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 55305427 is about 7436.7618625313. The cubic root of 55305427 is about 380.9979011694.

The spelling of 55305427 in words is "fifty-five million, three hundred five thousand, four hundred twenty-seven".