145254219 has 16 divisors (see below), whose sum is σ = 213957120. Its totient is φ = 86916960.

The previous prime is 145254203. The next prime is 145254227. The reversal of 145254219 is 912452541.

It is not a de Polignac number, because 145254219 - 2⁴ = 145254203 is a prime.

It is a super-2 number, since 2×145254219² = 42197576274599922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 145254219.

It is not an unprimeable number, because it can be changed into a prime (145254019) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 25252 + ... + 30465.

It is an arithmetic number, because the mean of its divisors is an integer number (13372320).

Almost surely, 2^145254219 is an apocalyptic number.

145254219 is a deficient number, since it is larger than the sum of its proper divisors (68702901).

145254219 is a wasteful number, since it uses less digits than its factorization.

145254219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55810.

The product of its digits is 14400, while the sum is 33.

The square root of 145254219 is about 12052.1458255366. The cubic root of 145254219 is about 525.6656337084.

The spelling of 145254219 in words is "one hundred forty-five million, two hundred fifty-four thousand, two hundred nineteen".