145226219 has 2 divisors, whose sum is σ = 145226220. Its totient is φ = 145226218.

The previous prime is 145226161. The next prime is 145226231. The reversal of 145226219 is 912622541.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145226219 is a prime.

It is a super-2 number, since 2×145226219² = 42181309370071922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145226239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72613109 + 72613110.

It is an arithmetic number, because the mean of its divisors is an integer number (72613110).

Almost surely, 2^145226219 is an apocalyptic number.

145226219 is a deficient number, since it is larger than the sum of its proper divisors (1).

145226219 is an equidigital number, since it uses as much as digits as its factorization.

145226219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 145226219 is about 12050.9841506825. The cubic root of 145226219 is about 525.6318548075.

The spelling of 145226219 in words is "one hundred forty-five million, two hundred twenty-six thousand, two hundred nineteen".