120455521 has 4 divisors (see below), whose sum is σ = 122497200. Its totient is φ = 118413844.

The previous prime is 120455509. The next prime is 120455549. The reversal of 120455521 is 125554021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 125554021 = 29 ⋅4329449.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120455521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120455551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1020751 + ... + 1020868.

It is an arithmetic number, because the mean of its divisors is an integer number (30624300).

Almost surely, 2^120455521 is an apocalyptic number.

It is an amenable number.

120455521 is a deficient number, since it is larger than the sum of its proper divisors (2041679).

120455521 is an equidigital number, since it uses as much as digits as its factorization.

120455521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041678.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 120455521 is about 10975.2230501252. The cubic root of 120455521 is about 493.8657442481.

The spelling of 120455521 in words is "one hundred twenty million, four hundred fifty-five thousand, five hundred twenty-one".