145020055 has 8 divisors (see below), whose sum is σ = 174359952. Its totient is φ = 115792128.

The previous prime is 145020049. The next prime is 145020079. The reversal of 145020055 is 550020541.

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 145020055 - 2⁹ = 145019543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 25114 + ... + 30343.

It is an arithmetic number, because the mean of its divisors is an integer number (21794994).

Almost surely, 2^145020055 is an apocalyptic number.

145020055 is a deficient number, since it is larger than the sum of its proper divisors (29339897).

145020055 is an equidigital number, since it uses as much as digits as its factorization.

145020055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55985.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 145020055 is about 12042.4272885494. The cubic root of 145020055 is about 525.3830069844.

Adding to 145020055 its reverse (550020541), we get a palindrome (695040596).

The spelling of 145020055 in words is "one hundred forty-five million, twenty thousand, fifty-five".