120044551 has 4 divisors (see below), whose sum is σ = 130957704. Its totient is φ = 109131400.

The previous prime is 120044537. The next prime is 120044579. The reversal of 120044551 is 155440021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155440021 = 11 ⋅14130911.

It is a cyclic number.

It is not a de Polignac number, because 120044551 - 2⁷ = 120044423 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120044501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5456560 + ... + 5456581.

It is an arithmetic number, because the mean of its divisors is an integer number (32739426).

Almost surely, 2^120044551 is an apocalyptic number.

120044551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120044551 is a deficient number, since it is larger than the sum of its proper divisors (10913153).

120044551 is a wasteful number, since it uses less digits than its factorization.

120044551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10913152.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 120044551 is about 10956.4844270414. The cubic root of 120044551 is about 493.3034474327.

Adding to 120044551 its reverse (155440021), we get a palindrome (275484572).

The spelling of 120044551 in words is "one hundred twenty million, forty-four thousand, five hundred fifty-one".