120555881 has 2 divisors, whose sum is σ = 120555882. Its totient is φ = 120555880.

The previous prime is 120555839. The next prime is 120555887. The reversal of 120555881 is 188555021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120121600 + 434281 = 10960^2 + 659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120555881 is a prime.

It is a super-2 number, since 2×120555881² = 29067440887372322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120555887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60277940 + 60277941.

It is an arithmetic number, because the mean of its divisors is an integer number (60277941).

Almost surely, 2^120555881 is an apocalyptic number.

It is an amenable number.

120555881 is a deficient number, since it is larger than the sum of its proper divisors (1).

120555881 is an equidigital number, since it uses as much as digits as its factorization.

120555881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16000, while the sum is 35.

The square root of 120555881 is about 10979.7942148293. The cubic root of 120555881 is about 494.0028643149.

The spelling of 120555881 in words is "one hundred twenty million, five hundred fifty-five thousand, eight hundred eighty-one".