55520159 has 2 divisors, whose sum is σ = 55520160. Its totient is φ = 55520158.

The previous prime is 55520149. The next prime is 55520167. The reversal of 55520159 is 95102555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55520159 - 2⁸ = 55519903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55520149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27760079 + 27760080.

It is an arithmetic number, because the mean of its divisors is an integer number (27760080).

Almost surely, 2^55520159 is an apocalyptic number.

55520159 is a deficient number, since it is larger than the sum of its proper divisors (1).

55520159 is an equidigital number, since it uses as much as digits as its factorization.

55520159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11250, while the sum is 32.

The square root of 55520159 is about 7451.1850735303. The cubic root of 55520159 is about 381.4903590850.

The spelling of 55520159 in words is "fifty-five million, five hundred twenty thousand, one hundred fifty-nine".