120005553 has 8 divisors (see below), whose sum is σ = 161805600. Its totient is φ = 79104608.

The previous prime is 120005551. The next prime is 120005569. The reversal of 120005553 is 355500021.

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

It is a cyclic number.

It is not a de Polignac number, because 120005553 - 2¹ = 120005551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120005551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224463 + ... + 224996.

It is an arithmetic number, because the mean of its divisors is an integer number (20225700).

Almost surely, 2^120005553 is an apocalyptic number.

It is an amenable number.

120005553 is a deficient number, since it is larger than the sum of its proper divisors (41800047).

120005553 is an equidigital number, since it uses as much as digits as its factorization.

120005553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449551.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 120005553 is about 10954.7046057847. The cubic root of 120005553 is about 493.2500230130.

Adding to 120005553 its reverse (355500021), we get a palindrome (475505574).

The spelling of 120005553 in words is "one hundred twenty million, five thousand, five hundred fifty-three".