145120055 has 8 divisors (see below), whose sum is σ = 178194192. Its totient is φ = 113395968.

The previous prime is 145120049. The next prime is 145120091. The reversal of 145120055 is 550021541.

It is a happy number.

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 145120055 - 2⁶ = 145119991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145120055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337274 + ... + 337703.

It is an arithmetic number, because the mean of its divisors is an integer number (22274274).

Almost surely, 2^145120055 is an apocalyptic number.

145120055 is a deficient number, since it is larger than the sum of its proper divisors (33074137).

145120055 is an equidigital number, since it uses as much as digits as its factorization.

145120055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675025.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 145120055 is about 12046.5785599065. The cubic root of 145120055 is about 525.5037402380.

Adding to 145120055 its reverse (550021541), we get a palindrome (695141596).

The spelling of 145120055 in words is "one hundred forty-five million, one hundred twenty thousand, fifty-five".