120255553 has 8 divisors (see below), whose sum is σ = 133146720. Its totient is φ = 107690880.

The previous prime is 120255533. The next prime is 120255571. The reversal of 120255553 is 355552021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120255553 - 2⁵ = 120255521 is a prime.

It is a super-2 number, since 2×120255553² = 28922796054671618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120255533) 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 in 7 ways as a sum of consecutive naturals, for example, 80848 + ... + 82321.

It is an arithmetic number, because the mean of its divisors is an integer number (16643340).

Almost surely, 2^120255553 is an apocalyptic number.

It is an amenable number.

120255553 is a deficient number, since it is larger than the sum of its proper divisors (12891167).

120255553 is a wasteful number, since it uses less digits than its factorization.

120255553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163247.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 120255553 is about 10966.1092918136. The cubic root of 120255553 is about 493.5923043267.

It can be divided in two parts, 12025 and 5553, that added together give a triangular number (17578 = T₁₈₇).

The spelling of 120255553 in words is "one hundred twenty million, two hundred fifty-five thousand, five hundred fifty-three".