120555601 has 2 divisors, whose sum is σ = 120555602. Its totient is φ = 120555600.

The previous prime is 120555557. The next prime is 120555623. The reversal of 120555601 is 106555021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120450625 + 104976 = 10975^2 + 324^2 .

It is a cyclic number.

It is not a de Polignac number, because 120555601 - 2¹³ = 120547409 is a prime.

It is not a weakly prime, because it can be changed into another prime (120555641) 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, 60277800 + 60277801.

It is an arithmetic number, because the mean of its divisors is an integer number (60277801).

Almost surely, 2^120555601 is an apocalyptic number.

It is an amenable number.

120555601 is a deficient number, since it is larger than the sum of its proper divisors (1).

120555601 is an equidigital number, since it uses as much as digits as its factorization.

120555601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 120555601 is about 10979.7814641276. The cubic root of 120555601 is about 494.0024818618.

The spelling of 120555601 in words is "one hundred twenty million, five hundred fifty-five thousand, six hundred one".