120530551 has 8 divisors (see below), whose sum is σ = 122084480. Its totient is φ = 118983168.

The previous prime is 120530503. The next prime is 120530563. The reversal of 120530551 is 155035021.

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 120530551 - 2¹¹ = 120528503 is a prime.

It is a super-2 number, since 2×120530551² = 29055227448727202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120530581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42970 + ... + 45688.

It is an arithmetic number, because the mean of its divisors is an integer number (15260560).

Almost surely, 2^120530551 is an apocalyptic number.

120530551 is a deficient number, since it is larger than the sum of its proper divisors (1553929).

120530551 is an equidigital number, since it uses as much as digits as its factorization.

120530551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3273.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 120530551 is about 10978.6406717772. The cubic root of 120530551 is about 493.9682635723.

Adding to 120530551 its reverse (155035021), we get a palindrome (275565572).

The spelling of 120530551 in words is "one hundred twenty million, five hundred thirty thousand, five hundred fifty-one".