145222333 has 2 divisors, whose sum is σ = 145222334. Its totient is φ = 145222332.

The previous prime is 145222307. The next prime is 145222349. The reversal of 145222333 is 333222541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82210489 + 63011844 = 9067^2 + 7938^2 .

It is an emirp because it is prime and its reverse (333222541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145222333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145222298 and 145222307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145222393) by changing a digit.

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 as a sum of consecutive naturals, namely, 72611166 + 72611167.

It is an arithmetic number, because the mean of its divisors is an integer number (72611167).

Almost surely, 2^145222333 is an apocalyptic number.

It is an amenable number.

145222333 is a deficient number, since it is larger than the sum of its proper divisors (1).

145222333 is an equidigital number, since it uses as much as digits as its factorization.

145222333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 25.

The square root of 145222333 is about 12050.8229179588. The cubic root of 145222333 is about 525.6271664355.

Adding to 145222333 its reverse (333222541), we get a palindrome (478444874).

The spelling of 145222333 in words is "one hundred forty-five million, two hundred twenty-two thousand, three hundred thirty-three".