145454555 has 4 divisors (see below), whose sum is σ = 174545472. Its totient is φ = 116363640.

The previous prime is 145454549. The next prime is 145454579. The reversal of 145454555 is 555454541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555454541 = 131 ⋅4240111.

It is not a de Polignac number, because 145454555 - 2⁸ = 145454299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 14545451 + ... + 14545460.

It is an arithmetic number, because the mean of its divisors is an integer number (43636368).

Almost surely, 2^145454555 is an apocalyptic number.

145454555 is a deficient number, since it is larger than the sum of its proper divisors (29090917).

145454555 is an equidigital number, since it uses as much as digits as its factorization.

145454555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29090916.

The product of its digits is 200000, while the sum is 38.

The square root of 145454555 is about 12060.4541788442. The cubic root of 145454555 is about 525.9071903701.

The spelling of 145454555 in words is "one hundred forty-five million, four hundred fifty-four thousand, five hundred fifty-five".