145545219 has 12 divisors (see below), whose sum is σ = 219372816. Its totient is φ = 92811312.

The previous prime is 145545209. The next prime is 145545233. The reversal of 145545219 is 912545541.

It is not a de Polignac number, because 145545219 - 2⁷ = 145545091 is a prime.

It is a super-2 number, since 2×145545219² = 42366821547515922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145545209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 351352 + ... + 351765.

It is an arithmetic number, because the mean of its divisors is an integer number (18281068).

Almost surely, 2^145545219 is an apocalyptic number.

145545219 is a deficient number, since it is larger than the sum of its proper divisors (73827597).

145545219 is a wasteful number, since it uses less digits than its factorization.

145545219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703146 (or 703143 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 145545219 is about 12064.2123240600. The cubic root of 145545219 is about 526.0164362813.

It can be divided in two parts, 14 and 5545219, that added together give a cube (5545233 = 177³).

The spelling of 145545219 in words is "one hundred forty-five million, five hundred forty-five thousand, two hundred nineteen".