145226213 has 8 divisors (see below), whose sum is σ = 159479616. Its totient is φ = 131148000.

The previous prime is 145226161. The next prime is 145226219. The reversal of 145226213 is 312622541.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145226213 - 2⁶ = 145226149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145226219) 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 in 7 ways as a sum of consecutive naturals, for example, 42056 + ... + 45377.

It is an arithmetic number, because the mean of its divisors is an integer number (19934952).

Almost surely, 2^145226213 is an apocalyptic number.

It is an amenable number.

145226213 is a deficient number, since it is larger than the sum of its proper divisors (14253403).

145226213 is a wasteful number, since it uses less digits than its factorization.

145226213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87595.

The product of its digits is 2880, while the sum is 26.

The square root of 145226213 is about 12050.9839017401. The cubic root of 145226213 is about 525.6318475687.

Adding to 145226213 its reverse (312622541), we get a palindrome (457848754).

The spelling of 145226213 in words is "one hundred forty-five million, two hundred twenty-six thousand, two hundred thirteen".